Fix image name property - forgot to call pdfioStringCreate* APIs for formatted

string...
Refactor block formatter to split content into lines and render the lines.
2025-07-13 14:34:28 +02:00 · 2024-12-12 07:11:25 -05:00 · 2024-12-11 20:14:32 -05:00 · 2024-12-11 15:37:03 -05:00 · 2024-12-10 18:53:51 -05:00 · 2024-12-10 18:41:23 -05:00
36 changed files with 5506 additions and 117 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,5 +1,6 @@
 *.1.dylib
 *.a
+*.dSYM
 *.log
 *.o
 *.so.1
@ -8,7 +9,10 @@
 /autom4te.cache
 /config.log
 /config.status
+/configure~
 /doc/pdfio.epub
+/examples/code128
+/examples/md2pdf
 /Makefile
 /packages
 /pdfio.pc
--- a/CHANGES.md
+++ b/CHANGES.md
@ -2,8 +2,36 @@ Changes in PDFio
 ================


-v1.3.0 (June 28, 2024)
----------------------
+v1.4.0 - YYYY-MM-DD
+-------------------
+
+- Added new `pdfioDictGetKey` and `pdfioDictGetNumPairs` APIs (Issue #63)
+- Added new `pdfioArrayRemove` and `pdfioDictClear` APIs (Issue #74)
+- Added new `pdfioFileCreateNameObj` and `pdfioObjGetName` APIs for creating and
+  getting name object values (Issue #76)
+- Updated documentation (Issue #78)
+- Fixed reading of PDF files whose trailer is missing a newline (Issue #80)
+- Fixed builds with some versions of VC++ (Issue #81)
+
+
+v1.3.2 - 2024-08-15
+-------------------
+
+- Added some more sanity checks to the TrueType font reader.
+- Updated documentation (Issue #77)
+- Fixed an issue when opening certain encrypted PDF files (Issue #62)
+
+
+v1.3.1 - 2024-08-05
+-------------------
+
+- CVE 2024-42358: Updated TrueType font reader to avoid large memory
+  allocations.
+- Fixed some documentation errors and added examples (Issue #68, Issue #69)
+
+
+v1.3.0 - 2024-06-28
+-------------------

 - Added `pdfioFileGetCatalog` API for accessing the root/catalog object of a
  PDF file (Issue #67)
@ -13,8 +41,8 @@ v1.3.0 (June 28, 2024)
 - Optimized string pool code.


-v1.2.0 (January 24, 2024)
-------------------------
+v1.2.0 - 2024-01-24
+-------------------

 - Now use autoconf to configure the PDFio sources (Issue #54)
 - Added `pdfioFileCreateNumberObj` and `pdfioFileCreateStringObj` functions
@ -37,8 +65,8 @@ v1.2.0 (January 24, 2024)
  65536 in the xref table (Issue #59)


-v1.1.4 (December 3, 2023)
-------------------------
+v1.1.4 - 2023-12-03
+-------------------

 - Fixed detection of encrypted strings that are too short (Issue #52)
 - Fixed a TrueType CMAP decoding bug.
@ -46,15 +74,15 @@ v1.1.4 (December 3, 2023)
 - Added a ToUnicode map for Unicode text to support text copying.


-v1.1.3 (November 15, 2023)
--------------------------
+v1.1.3 - 2023-11-15
+-------------------

 - Fixed Unicode font support (Issue #16)
 - Fixed missing initializer for 40-bit RC4 encryption (Issue #51)


-v1.1.2 (October 10, 2023)
-------------------------
+v1.1.2 - 2023-10-10
+-------------------

 - Updated `pdfioContentSetDashPattern` to support setting a solid (0 length)
  dash pattern (Issue #41)
@ -69,15 +97,15 @@ v1.1.2 (October 10, 2023)
  (Issue #48)


-v1.1.1 (March 20, 2023)
-----------------------
+v1.1.1 - 2023-03-20
+-------------------

 - CVE-2023-28428: Fixed a potential denial-of-service with corrupt PDF files.
 - Fixed a few build issues.


-v1.1.0 (February 6, 2023)
-------------------------
+v1.1.0 - 2023-02-06
+-------------------

 - CVE-2023-24808: Fixed a potential denial-of-service with corrupt PDF files.
 - Added `pdfioFileCreateTemporary` function (Issue #29)
@ -91,28 +119,28 @@ v1.1.0 (February 6, 2023)
 - Fixed `pdfioContentMatrixRotate` function.


-v1.0.1 (March 2, 2022)
----------------------
+v1.0.1 - 2022-03-02
+-------------------

 - Added missing `pdfioPageGetNumStreams` and `pdfioPageOpenStream` functions.
 - Added demo pdfiototext utility.
 - Fixed bug in `pdfioStreamGetToken`.


-v1.0.0 (December 14, 2021)
--------------------------
+v1.0.0 - 2021-12-14
+-------------------

 - First stable release.


-v1.0rc1 (November 30, 2021)
---------------------------
+v1.0rc1 - 2021-11-30
+--------------------

 - Fixed a few stack/buffer overflow bugs discovered via fuzzing.


-v1.0b2 (November 7, 2021)
-------------------------
+v1.0b2 - 2021-11-07
+-------------------

 - Added `pdfioFileCreateOutput` API to support streaming output of PDF
  (Issue #21)
@ -123,7 +151,7 @@ v1.0b2 (November 7, 2021)
 - Fixed some issues identified by a Coverity scan.


-v1.0b1 (August 30, 2021)
------------------------
+v1.0b1 - 2021-08-30
+-------------------

 - Initial release
--- a/EXAMPLES.md
+++ b/EXAMPLES.md
@ -0,0 +1,18 @@
+PDFio Examples
+==============
+
+The "examples" subdirectory contains example code showing how to do different
+things with PDFio.
+
+
+code128.c
+---------
+
+This example shows how to embed and use a barcode font.
+
+
+md2pdf.c
+--------
+
+This example shows how to generate pages with multiple fonts, embedded images,
+and headers and footers.
--- a/Makefile.in
+++ b/Makefile.in
@ -258,5 +258,5 @@ clang:

 # Analyze code using Cppcheck <http://cppcheck.sourceforge.net>
 cppcheck:
-	cppcheck $(CPPFLAGS) --template=gcc --addon=cert.py --suppressions-list=.cppcheck $(OBJS:.o=.c) 2>cppcheck.log
+	cppcheck $(CPPFLAGS) --template=gcc --suppressions-list=.cppcheck $(OBJS:.o=.c) 2>cppcheck.log
 	test -s cppcheck.log && (echo "$(GHA_ERROR)Cppcheck detected issues."; echo ""; cat cppcheck.log; exit 1) || exit 0
--- a/24
+++ b/24
@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for pdfio 1.3.0.
+# Generated by GNU Autoconf 2.71 for pdfio 1.4.0.
 #
 # Report bugs to <https://github.com/michaelrsweet/pdfio/issues>.
 #
@ -610,8 +610,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='pdfio'
 PACKAGE_TARNAME='pdfio'
-PACKAGE_VERSION='1.3.0'
-PACKAGE_STRING='pdfio 1.3.0'
+PACKAGE_VERSION='1.4.0'
+PACKAGE_STRING='pdfio 1.4.0'
 PACKAGE_BUGREPORT='https://github.com/michaelrsweet/pdfio/issues'
 PACKAGE_URL='https://www.msweet.org/pdfio'

@ -1293,7 +1293,7 @@ if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
-\`configure' configures pdfio 1.3.0 to adapt to many kinds of systems.
+\`configure' configures pdfio 1.4.0 to adapt to many kinds of systems.

 Usage: $0 [OPTION]... [VAR=VALUE]...

@ -1359,7 +1359,7 @@ fi

 if test -n "$ac_init_help"; then
  case $ac_init_help in
-     short | recursive ) echo "Configuration of pdfio 1.3.0:";;
+     short | recursive ) echo "Configuration of pdfio 1.4.0:";;
   esac
  cat <<\_ACEOF

@ -1456,7 +1456,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
  cat <<\_ACEOF
-pdfio configure 1.3.0
+pdfio configure 1.4.0
 generated by GNU Autoconf 2.71

 Copyright (C) 2021 Free Software Foundation, Inc.
@ -1612,7 +1612,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.

-It was created by pdfio $as_me 1.3.0, which was
+It was created by pdfio $as_me 1.4.0, which was
 generated by GNU Autoconf 2.71.  Invocation command line was

  $ $0$ac_configure_args_raw
@ -2368,9 +2368,9 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu



-PDFIO_VERSION="1.3.0"
-PDFIO_VERSION_MAJOR="`echo 1.3.0 | awk -F. '{print $1}'`"
-PDFIO_VERSION_MINOR="`echo 1.3.0 | awk -F. '{printf("%d\n",$2);}'`"
+PDFIO_VERSION="1.4.0"
+PDFIO_VERSION_MAJOR="`echo 1.4.0 | awk -F. '{print $1}'`"
+PDFIO_VERSION_MINOR="`echo 1.4.0 | awk -F. '{printf("%d\n",$2);}'`"



@ -4935,7 +4935,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by pdfio $as_me 1.3.0, which was
+This file was extended by pdfio $as_me 1.4.0, which was
 generated by GNU Autoconf 2.71.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
@ -4991,7 +4991,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-pdfio config.status 1.3.0
+pdfio config.status 1.4.0
 configured by $0, generated by GNU Autoconf 2.71,
  with options \\"\$ac_cs_config\\"

--- a/configure.ac
+++ b/configure.ac
@ -21,7 +21,7 @@ AC_PREREQ([2.70])


 dnl Package name and version...
-AC_INIT([pdfio], [1.3.0], [https://github.com/michaelrsweet/pdfio/issues], [pdfio], [https://www.msweet.org/pdfio])
+AC_INIT([pdfio], [1.4.0], [https://github.com/michaelrsweet/pdfio/issues], [pdfio], [https://www.msweet.org/pdfio])

 PDFIO_VERSION="AC_PACKAGE_VERSION"
 PDFIO_VERSION_MAJOR="`echo AC_PACKAGE_VERSION | awk -F. '{print $1}'`"
--- a/doc/pdfio.3
+++ b/doc/pdfio.3
@ -1,4 +1,4 @@
-.TH pdfio 3 "pdf read/write library" "2024-06-24" "pdf read/write library"
+.TH pdfio 3 "pdf read/write library" "2024-10-25" "pdf read/write library"
 .SH NAME
 pdfio \- pdf read/write library
 .SH Introduction
@ -138,6 +138,121 @@ PDFio also provides PDF content helper functions for producing PDF content that

    #include <pdfio\-content.h>
 .fi
+.SS Understanding PDF Files
+.PP
+A PDF file provides data and commands for displaying pages of graphics and text, and is structured in a way that allows it to be displayed in the same way across multiple devices and platforms. The following is a PDF which shows "Hello, World!" on one page:
+.nf
+
+    %PDF\-1.0                        % Header starts here
+    %âãÏÓ
+    1 0 obj                         % Body starts here
+    <<
+    /Kids [2 0 R]
+    /Count 1
+    /Type /Pages
+.fi
+.PP
+> endobj 2 0 obj <
+/Rotate 0
+/Parent 1 0 R
+/Resources 3 0 R
+/MediaBox [0 0 612 792]
+/Contents [4 0 R]/Type /Page
+ endobj 3 0 obj <
+/Font
+<<
+/F0
+<<
+/BaseFont /Times\-Italic
+/Subtype /Type1
+/Type /Font
+ > > endobj 4 0 obj <
+/Length 65
+ stream
+
+.IP \(bu 5
+.PP
+0. 0. 1. 50. 700. cm BT /F0 36. Tf (Hello, World!) Tj ET endstream endobj 5 0 obj << /Pages 1 0 R /Type /Catalog
+
+
+.PP
+> endobj xref % Cross\-reference table starts here 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000192 00000 n 0000000291 00000 n 0000000409 00000 n trailer % Trailer starts here << /Root 5 0 R /Size 6 > startxref 459 %%EOF
+.nf
+
+.fi
+
+.PP
+Header
+.PP
+The header is the first line of a PDF file that specifies the version of the PDF format that has been used, for example %PDF\-1.0\.
+.PP
+Since PDF files almost always contain binary data, they can become corrupted if line endings are changed. For example, if the file is transferred using FTP in text mode or is edited in Notepad on Windows. To allow legacy file transfer programs to determine that the file is binary, the PDF standard recommends including some bytes with character codes higher than 127 in the header, for example:
+.nf
+
+    %âãÏÓ
+.fi
+.PP
+The percent sign indicates a comment line while the other few bytes are arbitrary character codes in excess of 127. So, the whole header in our example is:
+.nf
+
+    %PDF\-1.0
+    %âãÏÓ
+.fi
+.PP
+Body
+.PP
+The file body consists of a sequence of objects, each preceded by an object number, generation number, and the obj keyword on one line, and followed by the endobj keyword on another. For example:
+.nf
+
+    1 0 obj
+    <<
+    /Kids [2 0 R]
+    /Count 1
+    /Type /Pages
+.fi
+.PP
+> endobj
+.nf
+
+.fi
+
+.PP
+In this example, the object number is 1 and the generation number is 0, meaning it is the first version of the object. The content for object 1 is between the initial 1 0 obj and trailing endobj lines. In this case, the content is the dictionary <</Kids [2 0 R] /Count 1 /Type /Pages>>\.
+.PP
+Cross\-Reference Table
+.PP
+The cross\-reference table lists the byte offset of each object in the file body. This allows random access to objects, meaning they don't have to be read in order. Objects that are not used are never read, making the process efficient. Operations like counting the number of pages in a PDF document are fast, even in large files.
+.PP
+Each object has an object number and a generation number. Generation numbers are used when a cross\-reference table entry is reused. For simplicity, we will assume generation numbers to be always zero and ignore them. The cross\-reference table consists of a header line that indicates the number of entries, a free entry line for object 0, and a line for each of the objects in the file body. For example:
+.nf
+
+    0 6                             % Six entries in table, starting at 0
+    0000000000 65535 f              % Free entry for object 0
+    0000000015 00000 n              % Object 1 is at byte offset 15
+    0000000074 00000 n              % Object 2 is at byte offset 74
+    0000000192 00000 n              % etc...
+    0000000291 00000 n
+    0000000409 00000 n              % Object 5 is at byte offset 409
+.fi
+.PP
+Trailer
+.PP
+The first line of the trailer is just the trailer keyword. This is followed by the trailer dictionary which contains at least the /Size entry specifying the number of entries in the cross\-reference table and the /Root entry which references the object for the document catalog which is the root element of the graph of objects in the body.
+.PP
+There follows a line with just the startxref keyword, a line with a single number specifying the byte offset of the start of the cross\-reference table within the file, and then the line %%EOF which signals the end of the PDF file.
+.nf
+
+    trailer                         % Trailer keyword
+    <<                              % The trailer dictinonary
+    /Root 5 0 R
+    /Size 6
+.fi
+.PP
+> startxref % startxref keyword 459 % Byte offset of cross\-reference table %%EOF % End\-of\-file marker
+.nf
+
+.fi
+
 .SH API Overview
 .PP
 PDFio exposes several types:
@ -218,7 +333,90 @@ Each PDF file contains one or more pages. The pdfioFileGetNumPages function retu
    }
 .fi
 .PP
-Each page is represented by a "page tree" object (what pdfioFileGetPage returns) that specifies information about the page and one or more "content" objects that contain the images, fonts, text, and graphics that appear on the page. Use the pdfioPageGetNumStreams and pdfioPageOpenStream functions to access the content streams for each page.
+Each page is represented by a "page tree" object (what pdfioFileGetPage returns) that specifies information about the page and one or more "content" objects that contain the images, fonts, text, and graphics that appear on the page. Use the pdfioPageGetNumStreams and pdfioPageOpenStream functions to access the content streams for each page, and pdfioObjGetDict to get the associated page object dictionary. For example, if you want to display the media and crop boxes for a given page:
+.nf
+
+    pdfio_file_t  *pdf;             // PDF file
+    size_t        i;                // Looping var
+    size_t        count;            // Number of pages
+    pdfio_obj_t   *page;            // Current page
+    pdfio_dict_t  *dict;            // Current page dictionary
+    pdfio_array_t *media_box;       // MediaBox array
+    double        media_values[4];  // MediaBox values
+    pdfio_array_t *crop_box;        // CropBox array
+    double        crop_values[4];   // CropBox values
+    
+    // Iterate the pages in the PDF file
+    for (i = 0, count = pdfioFileGetNumPages(pdf); i < count; i ++)
+    {
+      page = pdfioFileGetPage(pdf, i);
+      dict = pdfioObjGetDict(page);
+    
+      media_box       = pdfioDictGetArray(dict, "MediaBox");
+      media_values[0] = pdfioArrayGetNumber(media_box, 0);
+      media_values[1] = pdfioArrayGetNumber(media_box, 1);
+      media_values[2] = pdfioArrayGetNumber(media_box, 2);
+      media_values[3] = pdfioArrayGetNumber(media_box, 3);
+    
+      crop_box       = pdfioDictGetArray(dict, "CropBox");
+      crop_values[0] = pdfioArrayGetNumber(crop_box, 0);
+      crop_values[1] = pdfioArrayGetNumber(crop_box, 1);
+      crop_values[2] = pdfioArrayGetNumber(crop_box, 2);
+      crop_values[3] = pdfioArrayGetNumber(crop_box, 3);
+    
+      printf("Page %u: MediaBox=[%g %g %g %g], CropBox=[%g %g %g %g]\\n",
+             (unsigned)(i + 1),
+             media_values[0], media_values[1], media_values[2], media_values[3],
+             crop_values[0], crop_values[1], crop_values[2], crop_values[3]);
+    }
+.fi
+.PP
+Page object dictionaries have several (mostly optional) key/value pairs, including:
+.IP \(bu 5
+.PP
+"Annots": An array of annotation dictionaries for the page; use pdfioDictGetArray to get the array
+
+.IP \(bu 5
+.PP
+"CropBox": The crop box as an array of four numbers for the left, bottom, right, and top coordinates of the target media; use pdfioDictGetArray to get a pointer to the array of numbers
+
+.IP \(bu 5
+.PP
+"Dur": The number of seconds the page should be displayed; use pdfioDictGetNumber to get the page duration value
+
+.IP \(bu 5
+.PP
+"Group": The dictionary of transparency group values for the page; use pdfioDictGetDict to get a pointer to the resources dictionary
+
+.IP \(bu 5
+.PP
+"LastModified": The date and time when this page was last modified; use pdfioDictGetDate to get the Unix time_t value
+
+.IP \(bu 5
+.PP
+"Parent": The parent page tree node object for this page; use pdfioDictGetObj to get a pointer to the object
+
+.IP \(bu 5
+.PP
+"MediaBox": The media box as an array of four numbers for the left, bottom, right, and top coordinates of the target media; use pdfioDictGetArray to get a pointer to the array of numbers
+
+.IP \(bu 5
+.PP
+"Resources": The dictionary of resources for the page; use pdfioDictGetDict to get a pointer to the resources dictionary
+
+.IP \(bu 5
+.PP
+"Rotate": A number indicating the number of degrees of counter\-clockwise rotation to apply to the page when viewing; use pdfioDictGetNumber to get the rotation angle
+
+.IP \(bu 5
+.PP
+"Thumb": A thumbnail image object for the page; use pdfioDictGetObj to get a pointer to the thumbnail image object
+
+.IP \(bu 5
+.PP
+"Trans": The page transition dictionary; use pdfioDictGetDict to get a pointer to the dictionary
+
+
 .PP
 The pdfioFileClose function closes a PDF file and frees all memory that was used for it:
 .nf
@ -361,7 +559,7 @@ pdfioStreamWrite writes a buffer of data to the stream
 .PP
 The PDF content helper functions provide additional functions for writing specific PDF page stream commands.
 .PP
-When you are done writing the stream, call pdfioStreamCLose to close both the stream and the object.
+When you are done writing the stream, call pdfioStreamClose to close both the stream and the object.
 .SS PDF Content Helper Functions
 .PP
 PDFio includes many helper functions for embedding or writing specific kinds of content to a PDF file. These functions can be roughly grouped into five categories:
@ -787,6 +985,125 @@ pdfioContentTextShowf draws a formatted string in a text block
 pdfioContentTextShowJustified draws an array of literal strings with offsets between them


+.SH Examples
+.SS Read PDF Metadata
+.PP
+The following example function will open a PDF file and print the title, author, creation date, and number of pages:
+.nf
+
+    #include <pdfio.h>
+    #include <time.h>
+    
+    
+    void
+    show_pdf_info(const char *filename)
+    {
+      pdfio_file_t *pdf;
+      time_t       creation_date;
+      struct tm    *creation_tm;
+      char         creation_text[256];
+    
+    
+      // Open the PDF file with the default callbacks...
+      pdf = pdfioFileOpen(filename, /*password_cb*/NULL, /*password_cbdata*/NULL, /*error_cb*/NULL, /*error_cbdata*/NULL);
+      if (pdf == NULL)
+        return;
+    
+      // Get the creation date and convert to a string...
+      creation_date = pdfioFileGetCreationDate(pdf);
+      creation_tm   = localtime(&creation_date);
+      strftime(creation_text, sizeof(creation_text), "%c", &creation_tm);
+    
+      // Print file information to stdout...
+      printf("%s:\\n", filename);
+      printf("         Title: %s\\n", pdfioFileGetTitle(pdf));
+      printf("        Author: %s\\n", pdfioFileGetAuthor(pdf));
+      printf("    Created On: %s\\n", creation_text);
+      printf("  Number Pages: %u\\n", (unsigned)pdfioFileGetNumPages(pdf));
+    
+      // Close the PDF file...
+      pdfioFileClose(pdf);
+    }
+.fi
+.SS Create PDF File With Text and Image
+.PP
+The following example function will create a PDF file, embed a base font and the named JPEG or PNG image file, and then creates a page with the image centered on the page with the text centered below:
+.nf
+
+    #include <pdfio.h>
+    #include <pdfio\-content.h>
+    #include <string.h>
+    
+    
+    void
+    create_pdf_image_file(const char *pdfname, const char *imagename, const char *caption)
+    {
+      pdfio_file_t   *pdf;
+      pdfio_obj_t    *font;
+      pdfio_obj_t    *image;
+      pdfio_dict_t   *dict;
+      pdfio_stream_t *page;
+      double         width, height;
+      double         swidth, sheight;
+      double         tx, ty;
+    
+    
+      // Create the PDF file...
+      pdf = pdfioFileCreate(pdfname, /*version*/NULL, /*media_box*/NULL, /*crop_box*/NULL, /*error_cb*/NULL, /*error_cbdata*/NULL);
+    
+      // Create a Courier base font for the caption
+      font = pdfioFileCreateFontObjFromBase(pdf, "Courier");
+    
+      // Create an image object from the JPEG/PNG image file...
+      image = pdfioFileCreateImageObjFromFile(pdf, imagename, true);
+    
+      // Create a page dictionary with the font and image...
+      dict = pdfioDictCreate(pdf);
+      pdfioPageDictAddFont(dict, "F1", font);
+      pdfioPageDictAddImage(dict, "IM1", image);
+    
+      // Create the page and its content stream...
+      page = pdfioFileCreatePage(pdf, dict);
+    
+      // Position and scale the image on the page...
+      width  = pdfioImageGetWidth(image);
+      height = pdfioImageGetHeight(image);
+    
+      // Default media_box is "universal" 595.28x792 points (8.27x11in or 210x279mm)
+      // Use margins of 36 points (0.5in or 12.7mm) with another 36 points for the
+      // caption underneath...
+      swidth  = 595.28 \- 72.0;
+      sheight = swidth * height / width;
+      if (sheight > (792.0 \- 36.0 \- 72.0))
+      {
+        sheight = 792.0 \- 36.0 \- 72.0;
+        swidth  = sheight * width / height;
+      }
+    
+      tx = 0.5 * (595.28 \- swidth);
+      ty = 0.5 * (792 \- 36 \- sheight);
+    
+      pdfioContentDrawImage(page, "IM1", tx, ty + 36.0, swidth, sheight);
+    
+      // Draw the caption in black...
+      pdfioContentSetFillColorDeviceGray(page, 0.0);
+    
+      // Compute the starting point for the text \- Courier is monospaced with a
+      // nominal width of 0.6 times the text height...
+      tx = 0.5 * (595.28 \- 18.0 * 0.6 * strlen(caption));
+    
+      // Position and draw the caption underneath...
+      pdfioContentTextBegin(page);
+      pdfioContentSetTextFont(page, "F1", 18.0);
+      pdfioContentTextMoveTo(page, tx, ty);
+      pdfioContentTextShow(page, /*unicode*/false, caption);
+      pdfioContentTextEnd(page);
+    
+      // Close the page stream and the PDF file...
+      pdfioStreamClose(page);
+      pdfioFileClose(pdf);
+    }
+.fi

 .SH ENUMERATIONS
 .SS pdfio_cs_e
@ -1285,6 +1602,15 @@ pdfio_valtype_t  pdfioArrayGetType (
    size_t n
 );
 .fi
+.SS pdfioArrayRemove
+Remove an array entry.
+.PP
+.nf
+bool  pdfioArrayRemove (
+    pdfio_array_t *a,
+    size_t n
+);
+.fi
 .SS pdfioContentClip
 Clip output to the current path.
 .PP
@ -1865,6 +2191,15 @@ bool  pdfioContentTextShowf (
    ...
 );
 .fi
+.SS pdfioDictClear
+Remove a key/value pair from a dictionary.
+.PP
+.nf
+bool  pdfioDictClear (
+    pdfio_dict_t *dict,
+    const char *key
+);
+.fi
 .SS pdfioDictCopy
 Copy a dictionary to a PDF file.
 .PP
@ -1928,6 +2263,15 @@ pdfio_dict_t * pdfioDictGetDict (
    const char *key
 );
 .fi
+.SS pdfioDictGetKey
+Get the key for the specified pair.
+.PP
+.nf
+const char * pdfioDictGetKey (
+    pdfio_dict_t *dict,
+    size_t n
+);
+.fi
 .SS pdfioDictGetName
 Get a key name value from a dictionary.
 .PP
@ -1937,6 +2281,14 @@ const char * pdfioDictGetName (
    const char *key
 );
 .fi
+.SS pdfioDictGetNumPairs
+Get the number of key/value pairs in a dictionary.
+.PP
+.nf
+size_t  pdfioDictGetNumPairs (
+    pdfio_dict_t *dict
+);
+.fi
 .SS pdfioDictGetNumber
 Get a key number value from a dictionary.
 .PP
@ -2298,6 +2650,18 @@ Note: Currently PNG support is limited to grayscale, RGB, or indexed files
 without interlacing or alpha.  Transparency (masking) based on color/index
 .IP 5
 is supported.
+.SS pdfioFileCreateNameObj
+Create a new object in a PDF file containing a name.
+.PP
+.nf
+pdfio_obj_t * pdfioFileCreateNameObj (
+    pdfio_file_t *pdf,
+    const char *name
+);
+.fi
+.PP
+This function creates a new object with a name value in a PDF file.
+You must call \fIpdfioObjClose\fR to write the object to the file.
 .SS pdfioFileCreateNumberObj
 Create a new object in a PDF file containing a number.
 .PP
@ -2734,6 +3098,14 @@ size_t  pdfioObjGetLength (
    pdfio_obj_t *obj
 );
 .fi
+.SS pdfioObjGetName
+Get the name value associated with an object.
+.PP
+.nf
+const char * pdfioObjGetName (
+    pdfio_obj_t *obj
+);
+.fi
 .SS pdfioObjGetNumber
 Get the object's number.
 .PP
@ -2750,6 +3122,29 @@ const char * pdfioObjGetSubtype (
    pdfio_obj_t *obj
 );
 .fi
+.PP
+This function returns an object's PDF subtype name, if any.  Common subtype
+names include:
+.PP
+.IP \(bu 5
+"CIDFontType0": A CID Type0 font
+.IP \(bu 5
+"CIDFontType2": A CID TrueType font
+.IP \(bu 5
+"Image": An image or image mask
+.IP \(bu 5
+"Form": A fillable form
+.IP \(bu 5
+"OpenType": An OpenType font
+.IP \(bu 5
+"Type0": A composite font
+.IP \(bu 5
+"Type1": A PostScript Type1 font
+.IP \(bu 5
+"Type3": A PDF Type3 font
+.IP \(bu 5
+"TrueType": A TrueType font</li>
+</ul>
 .SS pdfioObjGetType
 Get an object's type.
 .PP
@ -2758,6 +3153,27 @@ const char * pdfioObjGetType (
    pdfio_obj_t *obj
 );
 .fi
+.PP
+This function returns an object's PDF type name, if any. Common type names
+include:
+.PP
+.IP \(bu 5
+"CMap": A character map for composite fonts
+.IP \(bu 5
+"Font": An embedded font (\fIpdfioObjGetSubtype\fR will tell you the
+  font format)
+.IP \(bu 5
+"FontDescriptor": A font descriptor
+.IP \(bu 5
+"Page": A (visible) page
+.IP \(bu 5
+"Pages": A page tree node
+.IP \(bu 5
+"Template": An invisible template page
+.IP \(bu 5
+"XObject": An image, image mask, or form (\fIpdfioObjGetSubtype\fR will
+  tell you which)</li>
+</ul>
 .SS pdfioObjOpenStream
 Open an object's (data) stream for reading.
 .PP
--- a/doc/pdfio.html
+++ b/doc/pdfio.html
@ -1,13 +1,13 @@
 <!DOCTYPE html>
 <html lang="en-US">
 <head>
-<title>PDFio Programming Manual v1.3.0</title>
+<title>PDFio Programming Manual v1.4.0</title>
 <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
 <meta name="generator" content="codedoc v3.7">
 <meta name="author" content="Michael R Sweet">
 <meta name="language" content="en-US">
 <meta name="copyright" content="Copyright © 2021-2024 by Michael R Sweet">
-<meta name="version" content="1.3.0">
+<meta name="version" content="1.4.0">
 <style type="text/css"><!--
 body {
  background: white;
@ -251,7 +251,7 @@ span.string {
 <body>
 <div class="header">
 <p><img class="title" src="pdfio-512.png"></p>
-<h1 class="title">PDFio Programming Manual v1.3.0</h1>
+<h1 class="title">PDFio Programming Manual v1.4.0</h1>
 <p>Michael R Sweet</p>
 <p>Copyright © 2021-2024 by Michael R Sweet</p>
 </div>
@ -265,6 +265,7 @@ span.string {
 <li><a href="#xcode-project">Xcode Project</a></li>
 <li><a href="#detecting-pdfio">Detecting PDFio</a></li>
 <li><a href="#header-files">Header Files</a></li>
+<li><a href="#understanding-pdf-files">Understanding PDF Files</a></li>
 </ul></li>
 <li><a href="#api-overview">API Overview</a><ul class="subcontents">
 <li><a href="#reading-pdf-files">Reading PDF Files</a></li>
@ -273,6 +274,10 @@ span.string {
 <li><a href="#pdf-streams">PDF Streams</a></li>
 <li><a href="#pdf-content-helper-functions">PDF Content Helper Functions</a></li>
 </ul></li>
+<li><a href="#examples">Examples</a><ul class="subcontents">
+<li><a href="#read-pdf-metadata">Read PDF Metadata</a></li>
+<li><a href="#create-pdf-file-with-text-and-image">Create PDF File With Text and Image</a></li>
+</ul></li>
 <li><a href="#FUNCTIONS">Functions</a><ul class="subcontents">
 <li><a href="#pdfioArrayAppendArray">pdfioArrayAppendArray</a></li>
 <li><a href="#pdfioArrayAppendBinary">pdfioArrayAppendBinary</a></li>
@ -301,6 +306,7 @@ span.string {
 <li><a href="#pdfioArrayGetSize">pdfioArrayGetSize</a></li>
 <li><a href="#pdfioArrayGetString">pdfioArrayGetString</a></li>
 <li><a href="#pdfioArrayGetType">pdfioArrayGetType</a></li>
+<li><a href="#pdfioArrayRemove">pdfioArrayRemove</a></li>
 <li><a href="#pdfioContentClip">pdfioContentClip</a></li>
 <li><a href="#pdfioContentDrawImage">pdfioContentDrawImage</a></li>
 <li><a href="#pdfioContentFill">pdfioContentFill</a></li>
@ -357,6 +363,7 @@ span.string {
 <li><a href="#pdfioContentTextShow">pdfioContentTextShow</a></li>
 <li><a href="#pdfioContentTextShowJustified">pdfioContentTextShowJustified</a></li>
 <li><a href="#pdfioContentTextShowf">pdfioContentTextShowf</a></li>
+<li><a href="#pdfioDictClear">pdfioDictClear</a></li>
 <li><a href="#pdfioDictCopy">pdfioDictCopy</a></li>
 <li><a href="#pdfioDictCreate">pdfioDictCreate</a></li>
 <li><a href="#pdfioDictGetArray">pdfioDictGetArray</a></li>
@ -364,7 +371,9 @@ span.string {
 <li><a href="#pdfioDictGetBoolean">pdfioDictGetBoolean</a></li>
 <li><a href="#pdfioDictGetDate">pdfioDictGetDate</a></li>
 <li><a href="#pdfioDictGetDict">pdfioDictGetDict</a></li>
+<li><a href="#pdfioDictGetKey">pdfioDictGetKey</a></li>
 <li><a href="#pdfioDictGetName">pdfioDictGetName</a></li>
+<li><a href="#pdfioDictGetNumPairs">pdfioDictGetNumPairs</a></li>
 <li><a href="#pdfioDictGetNumber">pdfioDictGetNumber</a></li>
 <li><a href="#pdfioDictGetObj">pdfioDictGetObj</a></li>
 <li><a href="#pdfioDictGetRect">pdfioDictGetRect</a></li>
@ -391,6 +400,7 @@ span.string {
 <li><a href="#pdfioFileCreateICCObjFromFile">pdfioFileCreateICCObjFromFile</a></li>
 <li><a href="#pdfioFileCreateImageObjFromData">pdfioFileCreateImageObjFromData</a></li>
 <li><a href="#pdfioFileCreateImageObjFromFile">pdfioFileCreateImageObjFromFile</a></li>
+<li><a href="#pdfioFileCreateNameObj">pdfioFileCreateNameObj</a></li>
 <li><a href="#pdfioFileCreateNumberObj">pdfioFileCreateNumberObj</a></li>
 <li><a href="#pdfioFileCreateObj">pdfioFileCreateObj</a></li>
 <li><a href="#pdfioFileCreateOutput">pdfioFileCreateOutput</a></li>
@ -432,6 +442,7 @@ span.string {
 <li><a href="#pdfioObjGetDict">pdfioObjGetDict</a></li>
 <li><a href="#pdfioObjGetGeneration">pdfioObjGetGeneration</a></li>
 <li><a href="#pdfioObjGetLength">pdfioObjGetLength</a></li>
+<li><a href="#pdfioObjGetName">pdfioObjGetName</a></li>
 <li><a href="#pdfioObjGetNumber">pdfioObjGetNumber</a></li>
 <li><a href="#pdfioObjGetSubtype">pdfioObjGetSubtype</a></li>
 <li><a href="#pdfioObjGetType">pdfioObjGetType</a></li>
@ -568,6 +579,104 @@ LIBS    +=      `pkg-config --libs pdfio`
 <p>PDFio also provides <a href="#pdf-content-helper-functions">PDF content helper functions</a> for producing PDF content that are defined in a separate header file:</p>
 <pre><code class="language-c"><span class="directive">#include &lt;pdfio-content.h&gt;</span>
 </code></pre>
+<h3 class="title" id="understanding-pdf-files">Understanding PDF Files</h3>
+<p>A PDF file provides data and commands for displaying pages of graphics and text, and is structured in a way that allows it to be displayed in the same way across multiple devices and platforms. The following is a PDF which shows &quot;Hello, World!&quot; on one page:</p>
+<pre><code>%PDF-1.0                        % Header starts here
+%âãÏÓ
+1 0 obj                         % Body starts here
+&lt;&lt;
+/Kids [2 0 R]
+/Count 1
+/Type /Pages
+</code></pre>
+<blockquote>
+<p>&gt; endobj 2 0 obj <a href="<
+/Rotate 0
+/Parent 1 0 R
+/Resources 3 0 R
+/MediaBox [0 0 612 792]
+/Contents [4 0 R]/Type /Page
+">&lt;
+/Rotate 0
+/Parent 1 0 R
+/Resources 3 0 R
+/MediaBox [0 0 612 792]
+/Contents [4 0 R]/Type /Page
+</a> endobj 3 0 obj <a href="<
+/Font
+<<
+/F0
+<<
+/BaseFont /Times-Italic
+/Subtype /Type1
+/Type /Font
+">&lt;
+/Font
+&lt;&lt;
+/F0
+&lt;&lt;
+/BaseFont /Times-Italic
+/Subtype /Type1
+/Type /Font
+</a> &gt; &gt; endobj 4 0 obj <a href="<
+/Length 65
+">&lt;
+/Length 65
+</a> stream</p>
+</blockquote>
+<ol>
+<li><p>0. 0. 1. 50. 700. cm BT /F0 36. Tf (Hello, World!) Tj ET endstream endobj 5 0 obj &lt;&lt; /Pages 1 0 R /Type /Catalog</p>
+</li>
+</ol>
+<blockquote>
+<p>&gt; endobj xref % Cross-reference table starts here 0 6 0000000000 65535 f 0000000015 00000 n 0000000074 00000 n 0000000192 00000 n 0000000291 00000 n 0000000409 00000 n trailer % Trailer starts here &lt;&lt; /Root 5 0 R /Size 6 &gt; startxref 459 %%EOF</p>
+<pre><code></code></pre>
+</blockquote>
+<h4 id="header">Header</h4>
+<p>The header is the first line of a PDF file that specifies the version of the PDF format that has been used, for example <code>%PDF-1.0</code>.</p>
+<p>Since PDF files almost always contain binary data, they can become corrupted if line endings are changed. For example, if the file is transferred using FTP in text mode or is edited in Notepad on Windows. To allow legacy file transfer programs to determine that the file is binary, the PDF standard recommends including some bytes with character codes higher than 127 in the header, for example:</p>
+<pre><code>%âãÏÓ
+</code></pre>
+<p>The percent sign indicates a comment line while the other few bytes are arbitrary character codes in excess of 127. So, the whole header in our example is:</p>
+<pre><code>%PDF-1.0
+%âãÏÓ
+</code></pre>
+<h4 id="body">Body</h4>
+<p>The file body consists of a sequence of objects, each preceded by an object number, generation number, and the obj keyword on one line, and followed by the endobj keyword on another. For example:</p>
+<pre><code>1 0 obj
+&lt;&lt;
+/Kids [2 0 R]
+/Count 1
+/Type /Pages
+</code></pre>
+<blockquote>
+<p>&gt; endobj</p>
+<pre><code></code></pre>
+</blockquote>
+<p>In this example, the object number is 1 and the generation number is 0, meaning it is the first version of the object. The content for object 1 is between the initial <code>1 0 obj</code> and trailing <code>endobj</code> lines. In this case, the content is the dictionary <code>&lt;&lt;/Kids [2 0 R] /Count 1 /Type /Pages&gt;&gt;</code>.</p>
+<h4 id="cross-reference-table">Cross-Reference Table</h4>
+<p>The cross-reference table lists the byte offset of each object in the file body. This allows random access to objects, meaning they don't have to be read in order. Objects that are not used are never read, making the process efficient. Operations like counting the number of pages in a PDF document are fast, even in large files.</p>
+<p>Each object has an object number and a generation number. Generation numbers are used when a cross-reference table entry is reused. For simplicity, we will assume generation numbers to be always zero and ignore them. The cross-reference table consists of a header line that indicates the number of entries, a free entry line for object 0, and a line for each of the objects in the file body. For example:</p>
+<pre><code>0 6                             % Six entries in table, starting at 0
+0000000000 65535 f              % Free entry for object 0
+0000000015 00000 n              % Object 1 is at byte offset 15
+0000000074 00000 n              % Object 2 is at byte offset 74
+0000000192 00000 n              % etc...
+0000000291 00000 n
+0000000409 00000 n              % Object 5 is at byte offset 409
+</code></pre>
+<h4 id="trailer">Trailer</h4>
+<p>The first line of the trailer is just the <code>trailer</code> keyword. This is followed by the trailer dictionary which contains at least the <code>/Size</code> entry specifying the number of entries in the cross-reference table and the <code>/Root</code> entry which references the object for the document catalog which is the root element of the graph of objects in the body.</p>
+<p>There follows a line with just the <code>startxref</code> keyword, a line with a single number specifying the byte offset of the start of the cross-reference table within the file, and then the line <code>%%EOF</code> which signals the end of the PDF file.</p>
+<pre><code>trailer                         % Trailer keyword
+&lt;&lt;                              % The trailer dictinonary
+/Root 5 0 R
+/Size 6
+</code></pre>
+<blockquote>
+<p>&gt; startxref % startxref keyword 459 % Byte offset of cross-reference table %%EOF % End-of-file marker</p>
+<pre><code></code></pre>
+</blockquote>
 <h2 class="title" id="api-overview">API Overview</h2>
 <p>PDFio exposes several types:</p>
 <ul>
@ -624,7 +733,66 @@ pdfio_obj_t  *page;  <span class="comment">// Current page</span>
  <span class="comment">// do something with page</span>
 }
 </code></pre>
-<p>Each page is represented by a &quot;page tree&quot; object (what <a href="#pdfioFileGetPage"><code>pdfioFileGetPage</code></a> returns) that specifies information about the page and one or more &quot;content&quot; objects that contain the images, fonts, text, and graphics that appear on the page. Use the <a href="#pdfioPageGetNumStreams"><code>pdfioPageGetNumStreams</code></a> and <a href="#pdfioPageOpenStream"><code>pdfioPageOpenStream</code></a> functions to access the content streams for each page.</p>
+<p>Each page is represented by a &quot;page tree&quot; object (what <a href="#pdfioFileGetPage"><code>pdfioFileGetPage</code></a> returns) that specifies information about the page and one or more &quot;content&quot; objects that contain the images, fonts, text, and graphics that appear on the page. Use the <a href="#pdfioPageGetNumStreams"><code>pdfioPageGetNumStreams</code></a> and <a href="#pdfioPageOpenStream"><code>pdfioPageOpenStream</code></a> functions to access the content streams for each page, and <a href="#pdfioObjGetDict"><code>pdfioObjGetDict</code></a> to get the associated page object dictionary. For example, if you want to display the media and crop boxes for a given page:</p>
+<pre><code class="language-c">pdfio_file_t  *pdf;             <span class="comment">// PDF file</span>
+size_t        i;                <span class="comment">// Looping var</span>
+size_t        count;            <span class="comment">// Number of pages</span>
+pdfio_obj_t   *page;            <span class="comment">// Current page</span>
+pdfio_dict_t  *dict;            <span class="comment">// Current page dictionary</span>
+pdfio_array_t *media_box;       <span class="comment">// MediaBox array</span>
+<span class="reserved">double</span>        media_values[<span class="number">4</span>];  <span class="comment">// MediaBox values</span>
+pdfio_array_t *crop_box;        <span class="comment">// CropBox array</span>
+<span class="reserved">double</span>        crop_values[<span class="number">4</span>];   <span class="comment">// CropBox values</span>
+
+<span class="comment">// Iterate the pages in the PDF file</span>
+<span class="reserved">for</span> (i = <span class="number">0</span>, count = pdfioFileGetNumPages(pdf); i &lt; count; i ++)
+{
+  page = pdfioFileGetPage(pdf, i);
+  dict = pdfioObjGetDict(page);
+
+  media_box       = pdfioDictGetArray(dict, <span class="string">&quot;MediaBox&quot;</span>);
+  media_values[<span class="number">0</span>] = pdfioArrayGetNumber(media_box, <span class="number">0</span>);
+  media_values[<span class="number">1</span>] = pdfioArrayGetNumber(media_box, <span class="number">1</span>);
+  media_values[<span class="number">2</span>] = pdfioArrayGetNumber(media_box, <span class="number">2</span>);
+  media_values[<span class="number">3</span>] = pdfioArrayGetNumber(media_box, <span class="number">3</span>);
+
+  crop_box       = pdfioDictGetArray(dict, <span class="string">&quot;CropBox&quot;</span>);
+  crop_values[<span class="number">0</span>] = pdfioArrayGetNumber(crop_box, <span class="number">0</span>);
+  crop_values[<span class="number">1</span>] = pdfioArrayGetNumber(crop_box, <span class="number">1</span>);
+  crop_values[<span class="number">2</span>] = pdfioArrayGetNumber(crop_box, <span class="number">2</span>);
+  crop_values[<span class="number">3</span>] = pdfioArrayGetNumber(crop_box, <span class="number">3</span>);
+
+  printf(<span class="string">&quot;Page %u: MediaBox=[%g %g %g %g], CropBox=[%g %g %g %g]\n&quot;</span>,
+         (<span class="reserved">unsigned</span>)(i + <span class="number">1</span>),
+         media_values[<span class="number">0</span>], media_values[<span class="number">1</span>], media_values[<span class="number">2</span>], media_values[<span class="number">3</span>],
+         crop_values[<span class="number">0</span>], crop_values[<span class="number">1</span>], crop_values[<span class="number">2</span>], crop_values[<span class="number">3</span>]);
+}
+</code></pre>
+<p>Page object dictionaries have several (mostly optional) key/value pairs, including:</p>
+<ul>
+<li><p>&quot;Annots&quot;: An array of annotation dictionaries for the page; use <a href="#pdfioDictGetArray"><code>pdfioDictGetArray</code></a> to get the array</p>
+</li>
+<li><p>&quot;CropBox&quot;: The crop box as an array of four numbers for the left, bottom, right, and top coordinates of the target media; use <a href="#pdfioDictGetArray"><code>pdfioDictGetArray</code></a> to get a pointer to the array of numbers</p>
+</li>
+<li><p>&quot;Dur&quot;: The number of seconds the page should be displayed; use <a href="#pdfioDictGetNumber"><code>pdfioDictGetNumber</code></a> to get the page duration value</p>
+</li>
+<li><p>&quot;Group&quot;: The dictionary of transparency group values for the page; use <a href="#pdfioDictGetDict"><code>pdfioDictGetDict</code></a> to get a pointer to the resources dictionary</p>
+</li>
+<li><p>&quot;LastModified&quot;: The date and time when this page was last modified; use <a href="#pdfioDictGetDate"><code>pdfioDictGetDate</code></a> to get the Unix <code>time_t</code> value</p>
+</li>
+<li><p>&quot;Parent&quot;: The parent page tree node object for this page; use <a href="#pdfioDictGetObj"><code>pdfioDictGetObj</code></a> to get a pointer to the object</p>
+</li>
+<li><p>&quot;MediaBox&quot;: The media box as an array of four numbers for the left, bottom, right, and top coordinates of the target media; use <a href="#pdfioDictGetArray"><code>pdfioDictGetArray</code></a> to get a pointer to the array of numbers</p>
+</li>
+<li><p>&quot;Resources&quot;: The dictionary of resources for the page; use <a href="#pdfioDictGetDict"><code>pdfioDictGetDict</code></a> to get a pointer to the resources dictionary</p>
+</li>
+<li><p>&quot;Rotate&quot;: A number indicating the number of degrees of counter-clockwise rotation to apply to the page when viewing; use <a href="#pdfioDictGetNumber"><code>pdfioDictGetNumber</code></a> to get the rotation angle</p>
+</li>
+<li><p>&quot;Thumb&quot;: A thumbnail image object for the page; use <a href="#pdfioDictGetObj"><code>pdfioDictGetObj</code></a> to get a pointer to the thumbnail image object</p>
+</li>
+<li><p>&quot;Trans&quot;: The page transition dictionary; use <a href="#pdfioDictGetDict"><code>pdfioDictGetDict</code></a> to get a pointer to the dictionary</p>
+</li>
+</ul>
 <p>The <a href="#pdfioFileClose"><code>pdfioFileClose</code></a> function closes a PDF file and frees all memory that was used for it:</p>
 <pre><code class="language-c">pdfioFileClose(pdf);
 </code></pre>
@ -709,7 +877,7 @@ pdfio_stream_t *st = pdfioFileCreatePage(pdf, dict);
 </li>
 </ul>
 <p>The <a href="#pdf-content-helper-functions">PDF content helper functions</a> provide additional functions for writing specific PDF page stream commands.</p>
-<p>When you are done writing the stream, call <a href="#pdfioStreamCLose"><code>pdfioStreamCLose</code></a> to close both the stream and the object.</p>
+<p>When you are done writing the stream, call <a href="#pdfioStreamClose"><code>pdfioStreamClose</code></a> to close both the stream and the object.</p>
 <h3 class="title" id="pdf-content-helper-functions">PDF Content Helper Functions</h3>
 <p>PDFio includes many helper functions for embedding or writing specific kinds of content to a PDF file. These functions can be roughly grouped into five categories:</p>
 <ul>
@ -943,6 +1111,119 @@ pdfio_obj_t *img = pdfioFileCreateImageObjFromFile(pdf, <span class="string">&qu
 <li><p><a href="#pdfioContentTextShowJustified"><code>pdfioContentTextShowJustified</code></a> draws an array of literal strings with offsets between them</p>
 </li>
 </ul>
+<h2 class="title" id="examples">Examples</h2>
+<h3 class="title" id="read-pdf-metadata">Read PDF Metadata</h3>
+<p>The following example function will open a PDF file and print the title, author, creation date, and number of pages:</p>
+<pre><code class="language-c"><span class="directive">#include &lt;pdfio.h&gt;</span>
+<span class="directive">#include &lt;time.h&gt;</span>
+
+
+<span class="reserved">void</span>
+show_pdf_info(<span class="reserved">const</span> <span class="reserved">char</span> *filename)
+{
+  pdfio_file_t *pdf;
+  time_t       creation_date;
+  <span class="reserved">struct</span> tm    *creation_tm;
+  <span class="reserved">char</span>         creation_text[<span class="number">256</span>];
+
+
+  <span class="comment">// Open the PDF file with the default callbacks...</span>
+  pdf = pdfioFileOpen(filename, <span class="comment">/*password_cb*/</span>NULL, <span class="comment">/*password_cbdata*/</span>NULL, <span class="comment">/*error_cb*/</span>NULL, <span class="comment">/*error_cbdata*/</span>NULL);
+  <span class="reserved">if</span> (pdf == NULL)
+    <span class="reserved">return</span>;
+
+  <span class="comment">// Get the creation date and convert to a string...</span>
+  creation_date = pdfioFileGetCreationDate(pdf);
+  creation_tm   = localtime(&amp;creation_date);
+  strftime(creation_text, <span class="reserved">sizeof</span>(creation_text), <span class="string">&quot;%c&quot;</span>, &amp;creation_tm);
+
+  <span class="comment">// Print file information to stdout...</span>
+  printf(<span class="string">&quot;%s:\n&quot;</span>, filename);
+  printf(<span class="string">&quot;         Title: %s\n&quot;</span>, pdfioFileGetTitle(pdf));
+  printf(<span class="string">&quot;        Author: %s\n&quot;</span>, pdfioFileGetAuthor(pdf));
+  printf(<span class="string">&quot;    Created On: %s\n&quot;</span>, creation_text);
+  printf(<span class="string">&quot;  Number Pages: %u\n&quot;</span>, (<span class="reserved">unsigned</span>)pdfioFileGetNumPages(pdf));
+
+  <span class="comment">// Close the PDF file...</span>
+  pdfioFileClose(pdf);
+}
+</code></pre>
+<h3 class="title" id="create-pdf-file-with-text-and-image">Create PDF File With Text and Image</h3>
+<p>The following example function will create a PDF file, embed a base font and the named JPEG or PNG image file, and then creates a page with the image centered on the page with the text centered below:</p>
+<pre><code class="language-c"><span class="directive">#include &lt;pdfio.h&gt;</span>
+<span class="directive">#include &lt;pdfio-content.h&gt;</span>
+<span class="directive">#include &lt;string.h&gt;</span>
+
+
+<span class="reserved">void</span>
+create_pdf_image_file(<span class="reserved">const</span> <span class="reserved">char</span> *pdfname, <span class="reserved">const</span> <span class="reserved">char</span> *imagename, <span class="reserved">const</span> <span class="reserved">char</span> *caption)
+{
+  pdfio_file_t   *pdf;
+  pdfio_obj_t    *font;
+  pdfio_obj_t    *image;
+  pdfio_dict_t   *dict;
+  pdfio_stream_t *page;
+  <span class="reserved">double</span>         width, height;
+  <span class="reserved">double</span>         swidth, sheight;
+  <span class="reserved">double</span>         tx, ty;
+
+
+  <span class="comment">// Create the PDF file...</span>
+  pdf = pdfioFileCreate(pdfname, <span class="comment">/*version*/</span>NULL, <span class="comment">/*media_box*/</span>NULL, <span class="comment">/*crop_box*/</span>NULL, <span class="comment">/*error_cb*/</span>NULL, <span class="comment">/*error_cbdata*/</span>NULL);
+
+  <span class="comment">// Create a Courier base font for the caption</span>
+  font = pdfioFileCreateFontObjFromBase(pdf, <span class="string">&quot;Courier&quot;</span>);
+
+  <span class="comment">// Create an image object from the JPEG/PNG image file...</span>
+  image = pdfioFileCreateImageObjFromFile(pdf, imagename, <span class="reserved">true</span>);
+
+  <span class="comment">// Create a page dictionary with the font and image...</span>
+  dict = pdfioDictCreate(pdf);
+  pdfioPageDictAddFont(dict, <span class="string">&quot;F1&quot;</span>, font);
+  pdfioPageDictAddImage(dict, <span class="string">&quot;IM1&quot;</span>, image);
+
+  <span class="comment">// Create the page and its content stream...</span>
+  page = pdfioFileCreatePage(pdf, dict);
+
+  <span class="comment">// Position and scale the image on the page...</span>
+  width  = pdfioImageGetWidth(image);
+  height = pdfioImageGetHeight(image);
+
+  <span class="comment">// Default media_box is &quot;universal&quot; 595.28x792 points (8.27x11in or 210x279mm)</span>
+  <span class="comment">// Use margins of 36 points (0.5in or 12.7mm) with another 36 points for the</span>
+  <span class="comment">// caption underneath...</span>
+  swidth  = <span class="number">595.28</span> - <span class="number">72.0</span>;
+  sheight = swidth * height / width;
+  <span class="reserved">if</span> (sheight &gt; (<span class="number">792.0</span> - <span class="number">36.0</span> - <span class="number">72.0</span>))
+  {
+    sheight = <span class="number">792.0</span> - <span class="number">36.0</span> - <span class="number">72.0</span>;
+    swidth  = sheight * width / height;
+  }
+
+  tx = <span class="number">0.5</span> * (<span class="number">595.28</span> - swidth);
+  ty = <span class="number">0.5</span> * (<span class="number">792</span> - <span class="number">36</span> - sheight);
+
+  pdfioContentDrawImage(page, <span class="string">&quot;IM1&quot;</span>, tx, ty + <span class="number">36.0</span>, swidth, sheight);
+
+  <span class="comment">// Draw the caption in black...</span>
+  pdfioContentSetFillColorDeviceGray(page, <span class="number">0.0</span>);
+
+  <span class="comment">// Compute the starting point for the text - Courier is monospaced with a</span>
+  <span class="comment">// nominal width of 0.6 times the text height...</span>
+  tx = <span class="number">0.5</span> * (<span class="number">595.28</span> - <span class="number">18.0</span> * <span class="number">0.6</span> * strlen(caption));
+
+  <span class="comment">// Position and draw the caption underneath...</span>
+  pdfioContentTextBegin(page);
+  pdfioContentSetTextFont(page, <span class="string">&quot;F1&quot;</span>, <span class="number">18.0</span>);
+  pdfioContentTextMoveTo(page, tx, ty);
+  pdfioContentTextShow(page, <span class="comment">/*unicode*/</span><span class="reserved">false</span>, caption);
+  pdfioContentTextEnd(page);
+
+  <span class="comment">// Close the page stream and the PDF file...</span>
+  pdfioStreamClose(page);
+  pdfioFileClose(pdf);
+}
+</code></pre>
 <h2 class="title"><a id="FUNCTIONS">Functions</a></h2>
 <h3 class="function"><a id="pdfioArrayAppendArray">pdfioArrayAppendArray</a></h3>
 <p class="description">Add an array value to an array.</p>
@ -1326,6 +1607,19 @@ size_t pdfioArrayGetSize(<a href="#pdfio_array_t">pdfio_array_t</a> *a);</p>
 </tbody></table>
 <h4 class="returnvalue">Return Value</h4>
 <p class="description">Value type</p>
+<h3 class="function"><a id="pdfioArrayRemove">pdfioArrayRemove</a></h3>
+<p class="description">Remove an array entry.</p>
+<p class="code">
+<span class="reserved">bool</span> pdfioArrayRemove(<a href="#pdfio_array_t">pdfio_array_t</a> *a, size_t n);</p>
+<h4 class="parameters">Parameters</h4>
+<table class="list"><tbody>
+<tr><th>a</th>
+<td class="description">Array</td></tr>
+<tr><th>n</th>
+<td class="description">Index</td></tr>
+</tbody></table>
+<h4 class="returnvalue">Return Value</h4>
+<p class="description"><code>true</code> on success, <code>false</code> otherwise</p>
 <h3 class="function"><a id="pdfioContentClip">pdfioContentClip</a></h3>
 <p class="description">Clip output to the current path.</p>
 <p class="code">
@ -2180,6 +2474,19 @@ argument specifies an array of UTF-8 encoded strings.</p>
 <p class="discussion">This function shows some formatted text in a PDF content stream. The
 &quot;unicode&quot; argument specifies that the current font maps to full Unicode.
 The &quot;format&quot; argument specifies a UTF-8 encoded <code>printf</code>-style format string.</p>
+<h3 class="function"><a id="pdfioDictClear">pdfioDictClear</a></h3>
+<p class="description">Remove a key/value pair from a dictionary.</p>
+<p class="code">
+<span class="reserved">bool</span> pdfioDictClear(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, <span class="reserved">const</span> <span class="reserved">char</span> *key);</p>
+<h4 class="parameters">Parameters</h4>
+<table class="list"><tbody>
+<tr><th>dict</th>
+<td class="description">Dictionary</td></tr>
+<tr><th>key</th>
+<td class="description">Key</td></tr>
+</tbody></table>
+<h4 class="returnvalue">Return Value</h4>
+<p class="description"><code>true</code> if cleared, <code>false</code> otherwise</p>
 <h3 class="function"><a id="pdfioDictCopy">pdfioDictCopy</a></h3>
 <p class="description">Copy a dictionary to a PDF file.</p>
 <p class="code">
@ -2271,6 +2578,19 @@ time_t pdfioDictGetDate(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, <span cl
 </tbody></table>
 <h4 class="returnvalue">Return Value</h4>
 <p class="description">Value</p>
+<h3 class="function"><a id="pdfioDictGetKey">pdfioDictGetKey</a></h3>
+<p class="description">Get the key for the specified pair.</p>
+<p class="code">
+<span class="reserved">const</span> <span class="reserved">char</span> *pdfioDictGetKey(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, size_t n);</p>
+<h4 class="parameters">Parameters</h4>
+<table class="list"><tbody>
+<tr><th>dict</th>
+<td class="description">Dictionary</td></tr>
+<tr><th>n</th>
+<td class="description">Pair index (<code>0</code>-based)</td></tr>
+</tbody></table>
+<h4 class="returnvalue">Return Value</h4>
+<p class="description">Key for specified pair</p>
 <h3 class="function"><a id="pdfioDictGetName">pdfioDictGetName</a></h3>
 <p class="description">Get a key name value from a dictionary.</p>
 <p class="code">
@ -2284,6 +2604,17 @@ time_t pdfioDictGetDate(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, <span cl
 </tbody></table>
 <h4 class="returnvalue">Return Value</h4>
 <p class="description">Value</p>
+<h3 class="function"><a id="pdfioDictGetNumPairs">pdfioDictGetNumPairs</a></h3>
+<p class="description">Get the number of key/value pairs in a dictionary.</p>
+<p class="code">
+size_t pdfioDictGetNumPairs(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict);</p>
+<h4 class="parameters">Parameters</h4>
+<table class="list"><tbody>
+<tr><th>dict</th>
+<td class="description">Dictionary</td></tr>
+</tbody></table>
+<h4 class="returnvalue">Return Value</h4>
+<p class="description">Number of pairs</p>
 <h3 class="function"><a id="pdfioDictGetNumber">pdfioDictGetNumber</a></h3>
 <p class="description">Get a key number value from a dictionary.</p>
 <p class="code">
@ -2771,6 +3102,22 @@ image on the page.<br>
 Note: Currently PNG support is limited to grayscale, RGB, or indexed files
 without interlacing or alpha.  Transparency (masking) based on color/index
 is supported.</blockquote>
+<h3 class="function"><a id="pdfioFileCreateNameObj">pdfioFileCreateNameObj</a></h3>
+<p class="description">Create a new object in a PDF file containing a name.</p>
+<p class="code">
+<a href="#pdfio_obj_t">pdfio_obj_t</a> *pdfioFileCreateNameObj(<a href="#pdfio_file_t">pdfio_file_t</a> *pdf, <span class="reserved">const</span> <span class="reserved">char</span> *name);</p>
+<h4 class="parameters">Parameters</h4>
+<table class="list"><tbody>
+<tr><th>pdf</th>
+<td class="description">PDF file</td></tr>
+<tr><th>name</th>
+<td class="description">Name value</td></tr>
+</tbody></table>
+<h4 class="returnvalue">Return Value</h4>
+<p class="description">New object</p>
+<h4 class="discussion">Discussion</h4>
+<p class="discussion">This function creates a new object with a name value in a PDF file.
+You must call <a href="#pdfioObjClose"><code>pdfioObjClose</code></a> to write the object to the file.</p>
 <h3 class="function"><a id="pdfioFileCreateNumberObj">pdfioFileCreateNumberObj</a></h3>
 <p class="description">Create a new object in a PDF file containing a number.</p>
 <p class="code">
@ -3352,6 +3699,17 @@ size_t pdfioObjGetLength(<a href="#pdfio_obj_t">pdfio_obj_t</a> *obj);</p>
 </tbody></table>
 <h4 class="returnvalue">Return Value</h4>
 <p class="description">Length in bytes or <code>0</code> for none</p>
+<h3 class="function"><a id="pdfioObjGetName">pdfioObjGetName</a></h3>
+<p class="description">Get the name value associated with an object.</p>
+<p class="code">
+<span class="reserved">const</span> <span class="reserved">char</span> *pdfioObjGetName(<a href="#pdfio_obj_t">pdfio_obj_t</a> *obj);</p>
+<h4 class="parameters">Parameters</h4>
+<table class="list"><tbody>
+<tr><th>obj</th>
+<td class="description">Object</td></tr>
+</tbody></table>
+<h4 class="returnvalue">Return Value</h4>
+<p class="description">Dictionary or <code>NULL</code> on error</p>
 <h3 class="function"><a id="pdfioObjGetNumber">pdfioObjGetNumber</a></h3>
 <p class="description">Get the object's number.</p>
 <p class="code">
@ -3373,7 +3731,30 @@ size_t pdfioObjGetNumber(<a href="#pdfio_obj_t">pdfio_obj_t</a> *obj);</p>
 <td class="description">Object</td></tr>
 </tbody></table>
 <h4 class="returnvalue">Return Value</h4>
-<p class="description">Object subtype</p>
+<p class="description">Object subtype name or <code>NULL</code> for none</p>
+<h4 class="discussion">Discussion</h4>
+<p class="discussion">This function returns an object's PDF subtype name, if any.  Common subtype
+names include:
+
+</p><ul>
+<li>&quot;CIDFontType0&quot;: A CID Type0 font
+</li>
+<li>&quot;CIDFontType2&quot;: A CID TrueType font
+</li>
+<li>&quot;Image&quot;: An image or image mask
+</li>
+<li>&quot;Form&quot;: A fillable form
+</li>
+<li>&quot;OpenType&quot;: An OpenType font
+</li>
+<li>&quot;Type0&quot;: A composite font
+</li>
+<li>&quot;Type1&quot;: A PostScript Type1 font
+</li>
+<li>&quot;Type3&quot;: A PDF Type3 font
+</li>
+<li>&quot;TrueType&quot;: A TrueType font</li>
+</ul>
 <h3 class="function"><a id="pdfioObjGetType">pdfioObjGetType</a></h3>
 <p class="description">Get an object's type.</p>
 <p class="code">
@ -3384,7 +3765,28 @@ size_t pdfioObjGetNumber(<a href="#pdfio_obj_t">pdfio_obj_t</a> *obj);</p>
 <td class="description">Object</td></tr>
 </tbody></table>
 <h4 class="returnvalue">Return Value</h4>
-<p class="description">Object type</p>
+<p class="description">Object type name or <code>NULL</code> for none</p>
+<h4 class="discussion">Discussion</h4>
+<p class="discussion">This function returns an object's PDF type name, if any. Common type names
+include:
+
+</p><ul>
+<li>&quot;CMap&quot;: A character map for composite fonts
+</li>
+<li>&quot;Font&quot;: An embedded font (<a href="#pdfioObjGetSubtype"><code>pdfioObjGetSubtype</code></a> will tell you the
+  font format)
+</li>
+<li>&quot;FontDescriptor&quot;: A font descriptor
+</li>
+<li>&quot;Page&quot;: A (visible) page
+</li>
+<li>&quot;Pages&quot;: A page tree node
+</li>
+<li>&quot;Template&quot;: An invisible template page
+</li>
+<li>&quot;XObject&quot;: An image, image mask, or form (<a href="#pdfioObjGetSubtype"><code>pdfioObjGetSubtype</code></a> will
+  tell you which)</li>
+</ul>
 <h3 class="function"><a id="pdfioObjOpenStream">pdfioObjOpenStream</a></h3>
 <p class="description">Open an object's (data) stream for reading.</p>
 <p class="code">
@ -3447,7 +3849,7 @@ array that was created using the
 <tr><th>dict</th>
 <td class="description">Page dictionary</td></tr>
 <tr><th>name</th>
-<td class="description">Font name</td></tr>
+<td class="description">Font name; must not contain spaces</td></tr>
 <tr><th>obj</th>
 <td class="description">Font object</td></tr>
 </tbody></table>
--- a/doc/pdfio.md
+++ b/doc/pdfio.md
@ -120,6 +120,182 @@ that are defined in a separate header file:
 ```


+Understanding PDF Files
+-----------------------
+
+A PDF file provides data and commands for displaying pages of graphics and text,
+and is structured in a way that allows it to be displayed in the same way across
+multiple devices and platforms.  The following is a PDF which shows "Hello,
+World!" on one page:
+
+```
+%PDF-1.0                        % Header starts here
+%âãÏÓ
+1 0 obj                         % Body starts here
+<<
+/Kids [2 0 R]
+/Count 1
+/Type /Pages
+>>
+endobj
+2 0 obj
+<<
+/Rotate 0
+/Parent 1 0 R
+/Resources 3 0 R
+/MediaBox [0 0 612 792]
+/Contents [4 0 R]/Type /Page
+>>
+endobj
+3 0 obj
+<<
+/Font
+<<
+/F0
+<<
+/BaseFont /Times-Italic
+/Subtype /Type1
+/Type /Font
+>>
+>>
+>>
+endobj
+4 0 obj
+<<
+/Length 65
+>>
+stream
+1. 0. 0. 1. 50. 700. cm
+BT
+  /F0 36. Tf
+  (Hello, World!) Tj
+ET
+endstream
+endobj
+5 0 obj
+<<
+/Pages 1 0 R
+/Type /Catalog
+>>
+endobj
+xref                            % Cross-reference table starts here
+0 6
+0000000000 65535 f
+0000000015 00000 n
+0000000074 00000 n
+0000000192 00000 n
+0000000291 00000 n
+0000000409 00000 n
+trailer                         % Trailer starts here
+<<
+/Root 5 0 R
+/Size 6
+>>
+startxref
+459
+%%EOF
+```
+
+
+### Header
+
+The header is the first line of a PDF file that specifies the version of the PDF
+format that has been used, for example `%PDF-1.0`.
+
+Since PDF files almost always contain binary data, they can become corrupted if
+line endings are changed.  For example, if the file is transferred using FTP in
+text mode or is edited in Notepad on Windows.  To allow legacy file transfer
+programs to determine that the file is binary, the PDF standard recommends
+including some bytes with character codes higher than 127 in the header, for
+example:
+
+```
+%âãÏÓ
+```
+
+The percent sign indicates a comment line while the other few bytes are
+arbitrary character codes in excess of 127.  So, the whole header in our example
+is:
+
+```
+%PDF-1.0
+%âãÏÓ
+```
+
+
+### Body
+
+The file body consists of a sequence of objects, each preceded by an object
+number, generation number, and the obj keyword on one line, and followed by the
+endobj keyword on another.  For example:
+
+```
+1 0 obj
+<<
+/Kids [2 0 R]
+/Count 1
+/Type /Pages
+>>
+endobj
+```
+
+In this example, the object number is 1 and the generation number is 0, meaning
+it is the first version of the object.  The content for object 1 is between the
+initial `1 0 obj` and trailing `endobj` lines.  In this case, the content is the
+dictionary `<</Kids [2 0 R] /Count 1 /Type /Pages>>`.
+
+
+### Cross-Reference Table
+
+The cross-reference table lists the byte offset of each object in the file body.
+This allows random access to objects, meaning they don't have to be read in
+order.  Objects that are not used are never read, making the process efficient.
+Operations like counting the number of pages in a PDF document are fast, even in
+large files.
+
+Each object has an object number and a generation number.  Generation numbers
+are used when a cross-reference table entry is reused.  For simplicity, we will
+assume generation numbers to be always zero and ignore them.  The
+cross-reference table consists of a header line that indicates the number of
+entries, a free entry line for object 0, and a line for each of the objects in
+the file body.  For example:
+
+```
+0 6                             % Six entries in table, starting at 0
+0000000000 65535 f              % Free entry for object 0
+0000000015 00000 n              % Object 1 is at byte offset 15
+0000000074 00000 n              % Object 2 is at byte offset 74
+0000000192 00000 n              % etc...
+0000000291 00000 n
+0000000409 00000 n              % Object 5 is at byte offset 409
+```
+
+
+### Trailer
+
+The first line of the trailer is just the `trailer` keyword.  This is followed
+by the trailer dictionary which contains at least the `/Size` entry specifying
+the number of entries in the cross-reference table and the `/Root` entry which
+references the object for the document catalog which is the root element of the
+graph of objects in the body.
+
+There follows a line with just the `startxref` keyword, a line with a single
+number specifying the byte offset of the start of the cross-reference table
+within the file, and then the line `%%EOF` which signals the end of the PDF
+file.
+
+```
+trailer                         % Trailer keyword
+<<                              % The trailer dictinonary
+/Root 5 0 R
+/Size 6
+>>
+startxref                       % startxref keyword
+459                             % Byte offset of cross-reference table
+%%EOF                           % End-of-file marker
+```
+
+
 API Overview
 ============

@ -132,6 +308,7 @@ PDFio exposes several types:
 - `pdfio_stream_t`: An object stream


+
 Reading PDF Files
 -----------------

@ -202,7 +379,74 @@ Each page is represented by a "page tree" object (what [`pdfioFileGetPage`](@@)
 returns) that specifies information about the page and one or more "content"
 objects that contain the images, fonts, text, and graphics that appear on the
 page.  Use the [`pdfioPageGetNumStreams`](@@) and [`pdfioPageOpenStream`](@@)
-functions to access the content streams for each page.
+functions to access the content streams for each page, and
+[`pdfioObjGetDict`](@@) to get the associated page object dictionary.  For
+example, if you want to display the media and crop boxes for a given page:
+
+```c
+pdfio_file_t  *pdf;             // PDF file
+size_t        i;                // Looping var
+size_t        count;            // Number of pages
+pdfio_obj_t   *page;            // Current page
+pdfio_dict_t  *dict;            // Current page dictionary
+pdfio_array_t *media_box;       // MediaBox array
+double        media_values[4];  // MediaBox values
+pdfio_array_t *crop_box;        // CropBox array
+double        crop_values[4];   // CropBox values
+
+// Iterate the pages in the PDF file
+for (i = 0, count = pdfioFileGetNumPages(pdf); i < count; i ++)
+{
+  page = pdfioFileGetPage(pdf, i);
+  dict = pdfioObjGetDict(page);
+
+  media_box       = pdfioDictGetArray(dict, "MediaBox");
+  media_values[0] = pdfioArrayGetNumber(media_box, 0);
+  media_values[1] = pdfioArrayGetNumber(media_box, 1);
+  media_values[2] = pdfioArrayGetNumber(media_box, 2);
+  media_values[3] = pdfioArrayGetNumber(media_box, 3);
+
+  crop_box       = pdfioDictGetArray(dict, "CropBox");
+  crop_values[0] = pdfioArrayGetNumber(crop_box, 0);
+  crop_values[1] = pdfioArrayGetNumber(crop_box, 1);
+  crop_values[2] = pdfioArrayGetNumber(crop_box, 2);
+  crop_values[3] = pdfioArrayGetNumber(crop_box, 3);
+
+  printf("Page %u: MediaBox=[%g %g %g %g], CropBox=[%g %g %g %g]\n",
+         (unsigned)(i + 1),
+         media_values[0], media_values[1], media_values[2], media_values[3],
+         crop_values[0], crop_values[1], crop_values[2], crop_values[3]);
+}
+```
+
+Page object dictionaries have several (mostly optional) key/value pairs,
+including:
+
+- "Annots": An array of annotation dictionaries for the page; use
+  [`pdfioDictGetArray`](@@) to get the array
+- "CropBox": The crop box as an array of four numbers for the left, bottom,
+  right, and top coordinates of the target media; use [`pdfioDictGetArray`](@@)
+  to get a pointer to the array of numbers
+- "Dur": The number of seconds the page should be displayed; use
+  [`pdfioDictGetNumber`](@@) to get the page duration value
+- "Group": The dictionary of transparency group values for the page; use
+  [`pdfioDictGetDict`](@@) to get a pointer to the resources dictionary
+- "LastModified": The date and time when this page was last modified; use
+  [`pdfioDictGetDate`](@@) to get the Unix `time_t` value
+- "Parent": The parent page tree node object for this page; use
+  [`pdfioDictGetObj`](@@) to get a pointer to the object
+- "MediaBox": The media box as an array of four numbers for the left, bottom,
+  right, and top coordinates of the target media; use [`pdfioDictGetArray`](@@)
+  to get a pointer to the array of numbers
+- "Resources": The dictionary of resources for the page; use
+  [`pdfioDictGetDict`](@@) to get a pointer to the resources dictionary
+- "Rotate": A number indicating the number of degrees of counter-clockwise
+  rotation to apply to the page when viewing; use [`pdfioDictGetNumber`](@@)
+  to get the rotation angle
+- "Thumb": A thumbnail image object for the page; use [`pdfioDictGetObj`](@@)
+  to get a pointer to the thumbnail image object
+- "Trans": The page transition dictionary; use [`pdfioDictGetDict`](@@) to get
+  a pointer to the dictionary

 The [`pdfioFileClose`](@@) function closes a PDF file and frees all memory that
 was used for it:
@ -345,7 +589,7 @@ to the stream:
 The [PDF content helper functions](@) provide additional functions for writing
 specific PDF page stream commands.

-When you are done writing the stream, call [`pdfioStreamCLose`](@@) to close
+When you are done writing the stream, call [`pdfioStreamClose`](@@) to close
 both the stream and the object.


@ -586,3 +830,133 @@ escaping, as needed:
 - [`pdfioContentTextShowf`](@@) draws a formatted string in a text block
 - [`pdfioContentTextShowJustified`](@@) draws an array of literal strings with
  offsets between them
+
+
+Examples
+========
+
+Read PDF Metadata
+-----------------
+
+The following example function will open a PDF file and print the title, author,
+creation date, and number of pages:
+
+```c
+#include <pdfio.h>
+#include <time.h>
+
+
+void
+show_pdf_info(const char *filename)
+{
+  pdfio_file_t *pdf;
+  time_t       creation_date;
+  struct tm    *creation_tm;
+  char         creation_text[256];
+
+
+  // Open the PDF file with the default callbacks...
+  pdf = pdfioFileOpen(filename, /*password_cb*/NULL, /*password_cbdata*/NULL, /*error_cb*/NULL, /*error_cbdata*/NULL);
+  if (pdf == NULL)
+    return;
+
+  // Get the creation date and convert to a string...
+  creation_date = pdfioFileGetCreationDate(pdf);
+  creation_tm   = localtime(&creation_date);
+  strftime(creation_text, sizeof(creation_text), "%c", &creation_tm);
+
+  // Print file information to stdout...
+  printf("%s:\n", filename);
+  printf("         Title: %s\n", pdfioFileGetTitle(pdf));
+  printf("        Author: %s\n", pdfioFileGetAuthor(pdf));
+  printf("    Created On: %s\n", creation_text);
+  printf("  Number Pages: %u\n", (unsigned)pdfioFileGetNumPages(pdf));
+
+  // Close the PDF file...
+  pdfioFileClose(pdf);
+}
+```
+
+
+Create PDF File With Text and Image
+-----------------------------------
+
+The following example function will create a PDF file, embed a base font and the
+named JPEG or PNG image file, and then creates a page with the image centered on
+the page with the text centered below:
+
+```c
+#include <pdfio.h>
+#include <pdfio-content.h>
+#include <string.h>
+
+
+void
+create_pdf_image_file(const char *pdfname, const char *imagename, const char *caption)
+{
+  pdfio_file_t   *pdf;
+  pdfio_obj_t    *font;
+  pdfio_obj_t    *image;
+  pdfio_dict_t   *dict;
+  pdfio_stream_t *page;
+  double         width, height;
+  double         swidth, sheight;
+  double         tx, ty;
+
+
+  // Create the PDF file...
+  pdf = pdfioFileCreate(pdfname, /*version*/NULL, /*media_box*/NULL, /*crop_box*/NULL, /*error_cb*/NULL, /*error_cbdata*/NULL);
+
+  // Create a Courier base font for the caption
+  font = pdfioFileCreateFontObjFromBase(pdf, "Courier");
+
+  // Create an image object from the JPEG/PNG image file...
+  image = pdfioFileCreateImageObjFromFile(pdf, imagename, true);
+
+  // Create a page dictionary with the font and image...
+  dict = pdfioDictCreate(pdf);
+  pdfioPageDictAddFont(dict, "F1", font);
+  pdfioPageDictAddImage(dict, "IM1", image);
+
+  // Create the page and its content stream...
+  page = pdfioFileCreatePage(pdf, dict);
+
+  // Position and scale the image on the page...
+  width  = pdfioImageGetWidth(image);
+  height = pdfioImageGetHeight(image);
+
+  // Default media_box is "universal" 595.28x792 points (8.27x11in or 210x279mm)
+  // Use margins of 36 points (0.5in or 12.7mm) with another 36 points for the
+  // caption underneath...
+  swidth  = 595.28 - 72.0;
+  sheight = swidth * height / width;
+  if (sheight > (792.0 - 36.0 - 72.0))
+  {
+    sheight = 792.0 - 36.0 - 72.0;
+    swidth  = sheight * width / height;
+  }
+
+  tx = 0.5 * (595.28 - swidth);
+  ty = 0.5 * (792 - 36 - sheight);
+
+  pdfioContentDrawImage(page, "IM1", tx, ty + 36.0, swidth, sheight);
+
+  // Draw the caption in black...
+  pdfioContentSetFillColorDeviceGray(page, 0.0);
+
+  // Compute the starting point for the text - Courier is monospaced with a
+  // nominal width of 0.6 times the text height...
+  tx = 0.5 * (595.28 - 18.0 * 0.6 * strlen(caption));
+
+  // Position and draw the caption underneath...
+  pdfioContentTextBegin(page);
+  pdfioContentSetTextFont(page, "F1", 18.0);
+  pdfioContentTextMoveTo(page, tx, ty);
+  pdfioContentTextShow(page, /*unicode*/false, caption);
+  pdfioContentTextEnd(page);
+
+  // Close the page stream and the PDF file...
+  pdfioStreamClose(page);
+  pdfioFileClose(pdf);
+}
+```
--- a/examples/Makefile
+++ b/examples/Makefile
@ -0,0 +1,46 @@
+#
+# Makefile for PDFio examples.
+#
+# Copyright © 2024 by Michael R Sweet.
+#
+# Licensed under Apache License v2.0.  See the file "LICENSE" for more
+# information.
+#
+
+# POSIX makefile
+.POSIX:
+
+
+# Common options
+CFLAGS		=	-g $(CPPFLAGS)
+CPPFLAGS	=	-I..
+LIBS		=	-L.. -lpdfio -lz
+
+
+# Targets
+TARGETS		=	\
+			code128 \
+			md2pdf
+
+
+# Make everything
+all:	$(TARGETS)
+
+
+# Clean everything
+clean:
+	rm -f $(TARGETS)
+
+
+# code128
+code128:	code128.c
+	$(CC) $(CFLAGS) -o $@ code128.c $(LIBS)
+
+
+# md2pdf
+md2pdf:		md2pdf.c mmd.c mmd.h
+	$(CC) $(CFLAGS) -o $@ md2pdf.c mmd.c $(LIBS)
+
+
+# Common dependencies...
+$(TARGETS):	Makefile ../pdfio.h ../pdfio-content.h
--- a/examples/Roboto-Bold.ttf
+++ b/examples/Roboto-Bold.ttf
--- a/examples/Roboto-Italic.ttf
+++ b/examples/Roboto-Italic.ttf
--- a/examples/Roboto-Regular.ttf
+++ b/examples/Roboto-Regular.ttf
--- a/examples/RobotoMono-Regular.ttf
+++ b/examples/RobotoMono-Regular.ttf
--- a/examples/code128.c
+++ b/examples/code128.c
@ -0,0 +1,209 @@
+//
+// Code 128 barcode example for PDFio.
+//
+// Copyright © 2024 by Michael R Sweet.
+//
+// Licensed under Apache License v2.0.  See the file "LICENSE" for more
+// information.
+//
+// Usage:
+//
+//   ./code128 "BARCODE" ["TEXT"] >FILENAME.pdf
+//
+
+#include <pdfio.h>
+#include <pdfio-content.h>
+
+
+//
+// 'make_code128()' - Make a Code 128 barcode string.
+//
+// This function produces a Code B (printable ASCII) representation of the
+// source string and doesn't try to optimize using Code C.  Non-printable and
+// extended characters are ignored in the source string.
+//
+
+
+static char *				// O - Output string
+make_code128(char       *dst,		// I - Destination buffer
+             const char *src,		// I - Source string
+             size_t     dstsize)	// I - Size of destination buffer
+{
+  char		*dstptr,		// Pointer into destination buffer
+		*dstend;		// End of destination buffer
+  int		sum;			// Weighted sum
+  static const char *code128_chars =	// Code 128 characters
+		" !\"#$%&'()*+,-./0123456789:;<=>?"
+		"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+		"`abcdefghijklmnopqrstuvwxyz{|}~\303"
+		"\304\305\306\307\310\311\312";
+  static const char code128_fnc_3 = '\304';
+					// FNC 3
+  static const char code128_fnc_2 = '\305';
+					// FNC 2
+  static const char code128_shift_b = '\306';
+					// Shift B (for lowercase)
+  static const char code128_code_c = '\307';
+					// Code C
+  static const char code128_code_b = '\310';
+					// Code B
+  static const char code128_fnc_4 = '\311';
+					// FNC 4
+  static const char code128_fnc_1 = '\312';
+					// FNC 1
+  static const char code128_start_code_a = '\313';
+					// Start code A
+  static const char code128_start_code_b = '\314';
+					// Start code A
+  static const char code128_start_code_c = '\315';
+					// Start code A
+  static const char code128_stop = '\316';
+					// Stop pattern
+
+
+  // Start a Code B barcode...
+  dstptr = dst;
+  dstend = dst + dstsize - 3;
+
+  *dstptr++ = code128_start_code_b;
+  sum       = code128_start_code_b - 100;
+
+  while (*src && dstptr < dstend)
+  {
+    if (*src >= ' ' && *src < 0x7f)
+    {
+      sum       += (dstptr - dst) * (*src - ' ');
+      *dstptr++ = *src;
+    }
+
+    src ++;
+  }
+
+  // Add the weighted sum modulo 103
+  *dstptr++ = code128_chars[sum % 103];
+
+  // Add the stop pattern and return...
+  *dstptr++ = code128_stop;
+  *dstptr   = '\0';
+
+  return (dst);
+}
+
+
+//
+// 'output_cb()' - Write PDF data to the standard output...
+//
+
+static ssize_t				// O - Number of bytes written
+output_cb(void       *output_cbdata,	// I - Callback data (not used)
+          const void *buffer,		// I - Buffer to write
+          size_t     bytes)		// I - Number of bytes to write
+{
+  (void)output_cbdata;
+
+  return ((ssize_t)fwrite(buffer, 1, bytes, stdout));
+}
+
+
+//
+// 'main()' - Produce a single-page barcode file.
+//
+
+int					// O - Exit status
+main(int  argc,				// I - Number of command-line arguments
+     char *argv[])			// I - Command-line arguments
+{
+  const char	*barcode,		// Barcode to show
+		*text;			// Text to display under barcode
+  pdfio_file_t	*pdf;			// Output PDF file
+  pdfio_obj_t	*barcode_font;		// Barcode font object
+  pdfio_obj_t	*text_font = NULL;	// Text font object
+  pdfio_dict_t	*page_dict;		// Page dictionary
+  pdfio_rect_t	media_box;		// Media/CropBox for page
+  pdfio_stream_t *page_st;		// Page stream
+  char		barcode_temp[256];	// Barcode buffer
+  double	barcode_height = 36.0,	// Height of barcode
+		barcode_width,		// Width of barcode
+		text_height = 0.0,	// Height of text
+		text_width = 0.0;	// Width of text
+
+
+  // Get the barcode and optional text from the command-line...
+  if (argc < 2 || argc > 3)
+  {
+    fputs("Usage: code128 \"BARCODE\" [\"TEXT\"] >FILENAME.pdf\n", stderr);
+    return (1);
+  }
+
+  barcode = argv[1];
+  text    = argv[2];
+
+  // Output a PDF file to the standard output...
+#ifdef _WIN32
+  setmode(1, O_BINARY);			// Force binary output on Windows
+#endif // _WIN32
+
+  if ((pdf = pdfioFileCreateOutput(output_cb, /*output_cbdata*/NULL, /*version*/NULL, /*media_box*/NULL, /*crop_box*/NULL, /*error_cb*/NULL, /*error_data*/NULL)) == NULL)
+    return (1);
+
+  // Load fonts...
+  barcode_font = pdfioFileCreateFontObjFromFile(pdf, "code128.ttf", /*unicode*/false);
+  if (text)
+    text_font = pdfioFileCreateFontObjFromFile(pdf, "../testfiles/OpenSans-Regular.ttf", /*unicode*/true);
+
+  // Generate Code128 characters for the desired barcode...
+  if (!(barcode[0] & 0x80))
+    barcode = make_code128(barcode_temp, barcode, sizeof(barcode_temp));
+
+  // Compute sizes of the text...
+  barcode_width = pdfioContentTextMeasure(barcode_font, barcode, barcode_height);
+  if (text && text_font)
+  {
+    text_height = 9.0;
+    text_width  = pdfioContentTextMeasure(text_font, text, text_height);
+  }
+
+  // Compute the size of the PDF page...
+  media_box.x1 = 0.0;
+  media_box.y1 = 0.0;
+  media_box.x2 = (barcode_width > text_width ? barcode_width : text_width) + 18.0;
+  media_box.y2 = barcode_height + text_height + 18.0;
+
+  // Start a page for the barcode...
+  page_dict = pdfioDictCreate(pdf);
+
+  pdfioDictSetRect(page_dict, "MediaBox", &media_box);
+  pdfioDictSetRect(page_dict, "CropBox", &media_box);
+
+  pdfioPageDictAddFont(page_dict, "B128", barcode_font);
+  if (text_font)
+    pdfioPageDictAddFont(page_dict, "TEXT", text_font);
+
+  page_st = pdfioFileCreatePage(pdf, page_dict);
+
+  // Draw the page...
+  pdfioContentSetStrokeColorGray(page_st, 0.0);
+
+  pdfioContentSetTextFont(page_st, "B128", barcode_height);
+  pdfioContentTextBegin(page_st);
+  pdfioContentTextMoveTo(page_st, 0.5 * (media_box.x2 - barcode_width), 9.0 + text_height);
+  pdfioContentTextShow(page_st, /*unicode*/false, barcode);
+  pdfioContentTextEnd(page_st);
+
+  if (text && text_font)
+  {
+    pdfioContentSetTextFont(page_st, "TEXT", text_height);
+    pdfioContentTextBegin(page_st);
+    pdfioContentTextMoveTo(page_st, 0.5 * (media_box.x2 - text_width), 9.0);
+    pdfioContentTextShow(page_st, /*unicode*/true, text);
+    pdfioContentTextEnd(page_st);
+  }
+
+  pdfioStreamClose(page_st);
+
+  // Close and return...
+  pdfioFileClose(pdf);
+
+  return (0);
+}
+
--- a/examples/code128.ttf
+++ b/examples/code128.ttf
--- a/examples/md2pdf.c
+++ b/examples/md2pdf.c
@ -0,0 +1,865 @@
+//
+// Simple markdown to PDF converter example for PDFio.
+//
+// Copyright © 2024 by Michael R Sweet.
+//
+// Licensed under Apache License v2.0.  See the file "LICENSE" for more
+// information.
+//
+// Usage:
+//
+//   ./md2pdf FILENAME.md >FILENAME.pdf
+//
+// The generated PDF file is formatted for a "universal" paper size (8.27x11",
+// the intersection of US Letter and ISO A4) with 1" top and bottom margins and
+// 0.5" side margins.  The document title (if present) is centered at the top
+// of the second and subsequent pages while the current heading and page number
+// are provided at the bottom of each page.
+//
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#ifdef _WIN32
+#  include <io.h>
+#else
+#  include <unistd.h>
+#endif // _WIN32
+#include "mmd.h"
+#include <pdfio.h>
+#include <pdfio-content.h>
+
+
+//
+// Types...
+//
+
+typedef enum doccolor_e			// Document color enumeration
+{
+  DOCCOLOR_BLACK,			// #000
+  DOCCOLOR_RED,				// #900
+  DOCCOLOR_GREEN,			// #090
+  DOCCOLOR_BLUE,			// #00C
+  DOCCOLOR_GRAY				// #555
+} doccolor_t;
+
+typedef enum docfont_e			// Document font enumeration
+{
+  DOCFONT_REGULAR,			// Roboto-Regular
+  DOCFONT_BOLD,				// Roboto-Bold
+  DOCFONT_ITALIC,			// Roboto-Italic
+  DOCFONT_MONOSPACE,			// RobotoMono-Regular
+  DOCFONT_MAX				// Number of fonts
+} docfont_t;
+
+typedef struct docimage_s		// Document image info
+{
+  const char	*url;			// Reference URL
+  pdfio_obj_t	*obj;			// Image object
+} docimage_t;
+
+#define DOCIMAGE_MAX	1000		// Maximum number of images
+
+typedef struct doclink_s		// Document link info
+{
+  const char	*url;			// Reference URL
+  pdfio_rect_t	box;			// Link box
+} doclink_t;
+
+#define DOCLINK_MAX	1000		// Maximum number of links/page
+
+typedef struct docdata_s		// Document formatting data
+{
+  pdfio_file_t	*pdf;			// PDF file
+  pdfio_rect_t	media_box;		// Media (page) box
+  pdfio_rect_t	crop_box;		// Crop box (for margins)
+  pdfio_rect_t	art_box;		// Art box (for markdown content)
+  pdfio_obj_t	*fonts[DOCFONT_MAX];	// Embedded fonts
+  size_t	num_images;		// Number of embedded images
+  docimage_t	images[DOCIMAGE_MAX];	// Embedded images
+  const char	*title;			// Document title
+  char		*heading;		// Current document heading
+  pdfio_stream_t *st;			// Current page stream
+  double	y;			// Current position on page
+  docfont_t	font;			// Current font
+  double	fsize;			// Current font size
+  doccolor_t	color;			// Current color
+  pdfio_obj_t	*annots;		// Annotations object (for links)
+  size_t	num_links;		// Number of links for this page
+  doclink_t	links[DOCLINK_MAX];	// Links for this page
+} docdata_t;
+
+typedef struct linefrag_s		// Line fragment
+{
+  double	x,			// X position of item
+		width,			// Width of item
+		height;			// Height of item
+  size_t	imagenum;		// Image number
+  const char	*text;			// Text string
+  bool		ws;			// Whitespace before text?
+  docfont_t	font;			// Text font
+  doccolor_t	color;			// Text color
+} linefrag_t;
+
+#define LINEFRAG_MAX	200		// Maximum number of fragments on a line
+
+
+//
+// Macros...
+//
+
+#define in2pt(in) (in * 72.0)
+#define mm2pt(mm) (mm * 72.0 / 25.4)
+
+
+//
+// Constants...
+//
+
+static const char * const docfont_filenames[] =
+{
+  "Roboto-Regular.ttf",
+  "Roboto-Bold.ttf",
+  "Roboto-Italic.ttf",
+  "RobotoMono-Regular.ttf"
+};
+
+static const char * const docfont_names[] =
+{
+  "FR",
+  "FB",
+  "FI",
+  "FM"
+};
+
+#define LINE_HEIGHT	1.4		// Multiplier for line height
+
+#define SIZE_BODY	11.0		// Size of body text (points)
+#define SIZE_CODEBLOCK	10.0		// Size of code block text (points)
+#define SIZE_HEADFOOT	9.0		// Size of header/footer text (points)
+#define SIZE_HEADING_1	18.0		// Size of first level heading (points)
+#define SIZE_HEADING_2	16.0		// Size of top level heading (points)
+#define SIZE_HEADING_3	15.0		// Size of top level heading (points)
+#define SIZE_HEADING_4	14.0		// Size of top level heading (points)
+#define SIZE_HEADING_5	13.0		// Size of top level heading (points)
+#define SIZE_HEADING_6	12.0		// Size of top level heading (points)
+#define SIZE_TABLE	10.0		// Size of table text (points)
+
+#define PAGE_WIDTH	mm2pt(210)	// Page width in points
+#define PAGE_LENGTH	in2pt(11)	// Page length in points
+#define PAGE_LEFT	in2pt(0.5)	// Left margin in points
+#define PAGE_RIGHT	(PAGE_WIDTH - in2pt(0.5))
+					// Right margin in points
+#define PAGE_BOTTOM	in2pt(1.0)	// Bottom margin in points
+#define PAGE_TOP	(PAGE_LENGTH - in2pt(1.0))
+					// Top margin in points
+#define PAGE_HEADER	(PAGE_LENGTH - in2pt(0.5))
+					// Vertical position of header
+#define PAGE_FOOTER	in2pt(0.5)	// Vertical position of footer
+
+#define UNICODE_VALUE	true		// `true` for Unicode text, `false` for ISO-8859-1
+
+
+//
+// 'mmd_walk_next()' - Find the next markdown node.
+//
+
+static mmd_t *				// O - Next node or `NULL` at end
+mmd_walk_next(mmd_t *top,		// I - Top node
+              mmd_t *node)		// I - Current node
+{
+  mmd_t	*next,				// Next node
+	*parent;			// Parent node
+
+
+  // Figure out the next node under "top"...
+  if ((next = mmdGetFirstChild(node)) == NULL)
+  {
+    if ((next = mmdGetNextSibling(node)) == NULL)
+    {
+      if ((parent = mmdGetParent(node)) != top)
+      {
+	while ((next = mmdGetNextSibling(parent)) == NULL)
+	{
+	  if ((parent = mmdGetParent(parent)) == top)
+	    break;
+	}
+      }
+    }
+  }
+
+  return (next);
+}
+
+
+//
+// 'add_images()' - Scan the markdown document for images.
+//
+
+static void
+add_images(docdata_t *dd,		// I - Document data
+           mmd_t     *doc)		// I - Markdown document
+{
+  mmd_t	*current,			// Current node
+	*next;				// Next node
+
+
+  // Scan the entire document for images...
+  for (current = mmdGetFirstChild(doc); current; current = next)
+  {
+    // Get next node
+    next = mmd_walk_next(doc, current);
+
+    // Look for image nodes...
+    if (mmdGetType(current) == MMD_TYPE_IMAGE)
+    {
+      const char	*url,		// URL for image
+			*ext;		// Extension
+
+      url = mmdGetURL(current);
+      ext = strrchr(url, '.');
+
+      fprintf(stderr, "IMAGE(%s), ext=\"%s\"\n", url, ext);
+
+      if (!access(url, 0) && ext && (!strcmp(ext, ".png") || !strcmp(ext, ".jpg") || !strcmp(ext, ".jpeg")))
+      {
+        // Local JPEG or PNG file, so add it if we haven't already...
+        size_t		i;		// Looping var
+
+        for (i = 0; i < dd->num_images; i ++)
+        {
+          if (!strcmp(dd->images[i].url, url))
+            break;
+        }
+
+        if (i >= dd->num_images && dd->num_images < DOCIMAGE_MAX)
+        {
+          dd->images[i].url = url;
+          if ((dd->images[i].obj = pdfioFileCreateImageObjFromFile(dd->pdf, url, false)) != NULL)
+	    dd->num_images ++;
+        }
+      }
+    }
+  }
+}
+
+
+//
+// 'set_color()' - Set the stroke and fill color as needed.
+//
+
+static void
+set_color(docdata_t  *dd,		// I - Document data
+          doccolor_t color)		// I - Document color
+{
+  if (color == dd->color)
+    return;
+
+  switch (color)
+  {
+    case DOCCOLOR_BLACK :
+        pdfioContentSetFillColorDeviceGray(dd->st, 0.0);
+        pdfioContentSetStrokeColorDeviceGray(dd->st, 0.0);
+        break;
+    case DOCCOLOR_RED :
+        pdfioContentSetFillColorDeviceRGB(dd->st, 0.6, 0.0, 0.0);
+        pdfioContentSetStrokeColorDeviceRGB(dd->st, 0.6, 0.0, 0.0);
+        break;
+    case DOCCOLOR_GREEN :
+        pdfioContentSetFillColorDeviceRGB(dd->st, 0.0, 0.6, 0.0);
+        pdfioContentSetStrokeColorDeviceRGB(dd->st, 0.0, 0.6, 0.0);
+        break;
+    case DOCCOLOR_BLUE :
+        pdfioContentSetFillColorDeviceRGB(dd->st, 0.0, 0.0, 0.8);
+        pdfioContentSetStrokeColorDeviceRGB(dd->st, 0.0, 0.0, 0.8);
+        break;
+    case DOCCOLOR_GRAY :
+        pdfioContentSetFillColorDeviceGray(dd->st, 0.333);
+        pdfioContentSetStrokeColorDeviceGray(dd->st, 0.333);
+        break;
+  }
+
+  dd->color = color;
+}
+
+
+//
+// 'set_font()' - Set the font typeface and size as needed.
+//
+
+static void
+set_font(docdata_t *dd,			// I - Document data
+         docfont_t font,		// I - Font
+         double    fsize)		// I - Font size
+{
+  if (font == dd->font && fabs(fsize - dd->fsize) < 0.1)
+    return;
+
+  if (font == DOCFONT_MAX)
+    return;
+
+  pdfioContentSetTextFont(dd->st, docfont_names[font], fsize);
+
+  dd->font  = font;
+  dd->fsize = fsize;
+}
+
+
+//
+// 'new_page()' - Start a new page.
+//
+
+static void
+new_page(docdata_t *dd)			// I - Document data
+{
+  pdfio_dict_t	*page_dict;		// Page dictionary
+  docfont_t	fontface;		// Current font face
+  size_t	i;			// Looping var
+  char		temp[32];		// Temporary string
+  double	width;			// Width of fragment
+
+
+  // Close the current page...
+  pdfioStreamClose(dd->st);
+
+  // Prep the new page...
+  page_dict = pdfioDictCreate(dd->pdf);
+
+  pdfioDictSetRect(page_dict, "MediaBox", &dd->media_box);
+//  pdfioDictSetRect(page_dict, "CropBox", &dd->crop_box);
+  pdfioDictSetRect(page_dict, "ArtBox", &dd->art_box);
+
+  for (fontface = DOCFONT_REGULAR; fontface < DOCFONT_MAX; fontface ++)
+    pdfioPageDictAddFont(page_dict, docfont_names[fontface], dd->fonts[fontface]);
+
+  for (i = 0; i < dd->num_images; i ++)
+    pdfioPageDictAddImage(page_dict, pdfioStringCreatef(dd->pdf, "I%u", (unsigned)i), dd->images[i].obj);
+
+  dd->st    = pdfioFileCreatePage(dd->pdf, page_dict);
+  dd->color = DOCCOLOR_BLACK;
+  dd->font  = DOCFONT_MAX;
+  dd->fsize = 0.0;
+  dd->y     = dd->art_box.y2;
+
+  // Add header/footer text
+  set_color(dd, DOCCOLOR_GRAY);
+  set_font(dd, DOCFONT_REGULAR, SIZE_HEADFOOT);
+
+  if (pdfioFileGetNumPages(dd->pdf) > 1 && dd->title)
+  {
+    // Show title in header...
+    width = pdfioContentTextMeasure(dd->fonts[DOCFONT_REGULAR], dd->title, SIZE_HEADFOOT);
+
+    pdfioContentTextBegin(dd->st);
+    pdfioContentTextMoveTo(dd->st, dd->crop_box.x1 + 0.5 * (dd->crop_box.x2 - dd->crop_box.x1 - width), dd->crop_box.y2 - SIZE_HEADFOOT);
+    pdfioContentTextShow(dd->st, UNICODE_VALUE, dd->title);
+    pdfioContentTextEnd(dd->st);
+
+    pdfioContentPathMoveTo(dd->st, dd->crop_box.x1, dd->crop_box.y2 - 2 * SIZE_HEADFOOT * LINE_HEIGHT + SIZE_HEADFOOT);
+    pdfioContentPathLineTo(dd->st, dd->crop_box.x2, dd->crop_box.y2 - 2 * SIZE_HEADFOOT * LINE_HEIGHT + SIZE_HEADFOOT);
+    pdfioContentStroke(dd->st);
+  }
+
+  // Show page number and current heading...
+  pdfioContentPathMoveTo(dd->st, dd->crop_box.x1, dd->crop_box.y1 + SIZE_HEADFOOT * LINE_HEIGHT);
+  pdfioContentPathLineTo(dd->st, dd->crop_box.x2, dd->crop_box.y1 + SIZE_HEADFOOT * LINE_HEIGHT);
+  pdfioContentStroke(dd->st);
+
+  pdfioContentTextBegin(dd->st);
+  snprintf(temp, sizeof(temp), "%u", (unsigned)pdfioFileGetNumPages(dd->pdf));
+  if (pdfioFileGetNumPages(dd->pdf) & 1)
+  {
+    // Page number on right...
+    width = pdfioContentTextMeasure(dd->fonts[DOCFONT_REGULAR], temp, SIZE_HEADFOOT);
+    pdfioContentTextMoveTo(dd->st, dd->crop_box.x2 - width, dd->crop_box.y1);
+  }
+  else
+  {
+    // Page number on left...
+    pdfioContentTextMoveTo(dd->st, dd->crop_box.x1, dd->crop_box.y1);
+  }
+
+  pdfioContentTextShow(dd->st, UNICODE_VALUE, temp);
+  pdfioContentTextEnd(dd->st);
+
+  if (dd->heading)
+  {
+    pdfioContentTextBegin(dd->st);
+
+    if (pdfioFileGetNumPages(dd->pdf) & 1)
+    {
+      // Current heading on left...
+      pdfioContentTextMoveTo(dd->st, dd->crop_box.x1, dd->crop_box.y1);
+    }
+    else
+    {
+      width = pdfioContentTextMeasure(dd->fonts[DOCFONT_REGULAR], dd->heading, SIZE_HEADFOOT);
+      pdfioContentTextMoveTo(dd->st, dd->crop_box.x2 - width, dd->crop_box.y1);
+    }
+
+    pdfioContentTextShow(dd->st, UNICODE_VALUE, dd->heading);
+    pdfioContentTextEnd(dd->st);
+  }
+}
+
+
+//
+// 'render_line()' - Render a line of text/graphics.
+//
+
+static void
+render_line(docdata_t  *dd,		// I - Document data
+            double     margin_top,	// I - Top margin
+            double     lineheight,	// I - Height of line
+            size_t     num_frags,	// I - Number of line fragments
+            linefrag_t *frags)		// I - Line fragments
+{
+  size_t	i;			// Looping var
+  linefrag_t	*frag;			// Current line fragment
+  bool		in_text = false;	// Are we in a text block?
+
+
+  if (!dd->st)
+    new_page(dd);
+
+  dd->y -= margin_top + lineheight;
+  if (dd->y < dd->art_box.y1)
+  {
+    new_page(dd);
+
+    dd->y -= lineheight;
+  }
+
+  fprintf(stderr, "num_frags=%u, y=%g\n", (unsigned)num_frags, dd->y);
+
+  for (i = 0, frag = frags; i < num_frags; i ++, frag ++)
+  {
+    if (frag->text)
+    {
+      // Draw text
+      fprintf(stderr, "    text=\"%s\", font=%d, color=%d, x=%g\n", frag->text, frag->font, frag->color, frag->x);
+
+      set_color(dd, frag->color);
+      set_font(dd, frag->font, frag->height);
+
+      if (!in_text)
+      {
+	pdfioContentTextBegin(dd->st);
+	pdfioContentTextMoveTo(dd->st, frag->x, dd->y);
+
+	in_text = true;
+      }
+
+      if (frag->ws)
+	pdfioContentTextShowf(dd->st, UNICODE_VALUE, " %s", frag->text);
+      else
+	pdfioContentTextShow(dd->st, UNICODE_VALUE, frag->text);
+    }
+    else
+    {
+      // Draw image
+      char	imagename[32];		// Current image name
+
+      fprintf(stderr, "    imagenum=%u, x=%g, width=%g, height=%g\n", (unsigned)frag->imagenum, frag->x, frag->width, frag->height);
+
+      if (in_text)
+      {
+	pdfioContentTextEnd(dd->st);
+	in_text = false;
+      }
+
+      snprintf(imagename, sizeof(imagename), "I%u", (unsigned)frag->imagenum);
+      pdfioContentDrawImage(dd->st, imagename, frag->x, dd->y, frag->width, frag->height);
+    }
+  }
+
+  if (in_text)
+    pdfioContentTextEnd(dd->st);
+}
+
+
+//
+// 'format_block()' - Format a block of text
+//
+
+static void
+format_block(docdata_t  *dd,		// I - Document data
+             mmd_t      *block,		// I - Block to format
+             docfont_t  deffont,	// I - Default font
+             double     fsize,		// I - Size of font
+             double     left,		// I - Left margin
+             double     right,		// I - Right margin
+             const char *leader)	// I - Leader text on the first line
+{
+  mmd_type_t	blocktype;		// Block type
+  mmd_t		*current,		// Current node
+		*next;			// Next node
+  size_t	num_frags;		// Number of line fragments
+  linefrag_t	frags[LINEFRAG_MAX],	// Line fragments
+		*frag;			// Current fragment
+  mmd_type_t	type;			// Current node type
+  const char	*text,			// Current text
+		*url;			// Current URL, if any
+  bool		ws;			// Current whitespace
+  pdfio_obj_t	*image;			// Current image, if any
+  size_t	imagenum;		// Current image number
+  doccolor_t	color = DOCCOLOR_BLACK;	// Current text color
+  docfont_t	font = deffont;		// Current text font
+  double	x,			// Current position
+		width,			// Width of current fragment
+		wswidth,		// Width of whitespace
+		margin_top,		// Top margin
+		height,			// Height of current fragment
+		lineheight;		// Height of current line
+
+
+  blocktype  = mmdGetType(block);
+  margin_top = fsize * LINE_HEIGHT;
+
+  if (leader)
+  {
+    // Add leader text on first line...
+    frags[0].width  = pdfioContentTextMeasure(dd->fonts[deffont], leader, fsize);
+    frags[0].height = fsize;
+    frags[0].x      = left - frags[0].width;
+    frags[0].text   = leader;
+    frags[0].font   = deffont;
+    frags[0].color  = DOCCOLOR_BLACK;
+
+    num_frags  = 1;
+    lineheight = fsize * LINE_HEIGHT;
+  }
+  else
+  {
+    // No leader text...
+    num_frags  = 0;
+    lineheight = 0.0;
+  }
+
+  frag = frags + num_frags;
+
+  // Loop through the block and render lines...
+  for (current = mmdGetFirstChild(block), x = left; current; current = next)
+  {
+    // Get information about the current node...
+    type     = mmdGetType(current);
+    text     = mmdGetText(current);
+    image    = NULL;
+    imagenum = 0;
+    url      = mmdGetURL(current);
+    ws       = mmdGetWhitespace(current);
+    wswidth  = 0.0;
+    next     = mmd_walk_next(block, current);
+
+    // Process the node...
+    if (type == MMD_TYPE_IMAGE && url)
+    {
+      // Embed an image
+      size_t	i;			// Looping var
+
+      for (i = 0; i < dd->num_images; i ++)
+      {
+        if (!strcmp(dd->images[i].url, url))
+        {
+          image    = dd->images[i].obj;
+          imagenum = i;
+          break;
+        }
+      }
+
+      if (!image)
+        continue;
+
+      // Image - treat as 100dpi
+      width  = 72.0 * pdfioImageGetWidth(image) / 100.0;
+      height = 72.0 * pdfioImageGetHeight(image) / 100.0;
+      text   = NULL;
+
+      if (width > (right - left))
+      {
+        // Too wide, scale to width...
+        width  = right - left;
+        height = width * pdfioImageGetHeight(image) / pdfioImageGetWidth(image);
+      }
+      else if (height > (dd->art_box.y2 - dd->art_box.y1))
+      {
+        // Too tall, scale to height...
+        height = dd->art_box.y2 - dd->art_box.y1;
+        width  = height * pdfioImageGetWidth(image) / pdfioImageGetHeight(image);
+      }
+    }
+    else if (!text)
+    {
+      continue;
+    }
+    else
+    {
+      // Text fragment...
+      if (type == MMD_TYPE_EMPHASIZED_TEXT)
+	font = DOCFONT_ITALIC;
+      else if (type == MMD_TYPE_STRONG_TEXT)
+	font = DOCFONT_BOLD;
+      else  if (type == MMD_TYPE_CODE_TEXT)
+	font = DOCFONT_MONOSPACE;
+      else
+	font = deffont;
+
+      if (type == MMD_TYPE_CODE_TEXT)
+	color = DOCCOLOR_RED;
+      else if (type == MMD_TYPE_LINKED_TEXT)
+	color = DOCCOLOR_BLUE;
+      else
+	color = DOCCOLOR_BLACK;
+
+      width  = pdfioContentTextMeasure(dd->fonts[font], text, fsize);
+      height = fsize * LINE_HEIGHT;
+
+      if (ws)
+	wswidth = pdfioContentTextMeasure(dd->fonts[font], " ", fsize);
+    }
+
+    // See if this node will fit on the current line...
+    if ((num_frags > 0 && (x + width + wswidth) >= right) || num_frags == LINEFRAG_MAX)
+    {
+      // No, render this line and start over...
+      render_line(dd, margin_top, lineheight, num_frags, frags);
+
+      num_frags  = 0;
+      frag       = frags;
+      x          = left;
+      lineheight = 0.0;
+      margin_top = 0.0;
+    }
+
+    // Add the current node to the fragment list
+    if (num_frags == 0)
+      wswidth = 0.0;
+
+    frag->x          = x;
+    frag->width      = width + wswidth;
+    frag->height     = text ? fsize : height;
+    frag->imagenum   = imagenum;
+    frag->text       = text;
+    frag->ws         = ws;
+    frag->font       = font;
+    frag->color      = color;
+
+    num_frags ++;
+    frag ++;
+    x += width + wswidth;
+    if (height > lineheight)
+      lineheight = height;
+  }
+
+  if (num_frags > 0)
+    render_line(dd, margin_top, lineheight, num_frags, frags);
+}
+
+
+//
+// 'format_doc()' - Format a document.
+//
+
+static void
+format_doc(docdata_t *dd,		// I - Document data
+           mmd_t     *doc,		// I - Document node to format
+           double    left,		// I - Left margin
+           double    right)		// I - Right margin
+{
+  int		i;			// Child number
+  mmd_type_t	doctype;		// Document node type
+  mmd_t		*current;		// Current node
+  mmd_type_t	curtype;		// Current node type
+  char		leader[32];		// Leader
+  static const double heading_sizes[] =	// Heading font sizes
+  {
+    SIZE_HEADING_1,
+    SIZE_HEADING_2,
+    SIZE_HEADING_3,
+    SIZE_HEADING_4,
+    SIZE_HEADING_5,
+    SIZE_HEADING_6
+  };
+
+
+  doctype = mmdGetType(doc);
+
+  for (i = 1, current = mmdGetFirstChild(doc); current; i ++, current = mmdGetNextSibling(current))
+  {
+    switch (curtype = mmdGetType(current))
+    {
+      default :
+          break;
+
+      case MMD_TYPE_BLOCK_QUOTE :
+          format_doc(dd, current, left + 36.0, right - 36.0);
+          break;
+
+      case MMD_TYPE_ORDERED_LIST :
+      case MMD_TYPE_UNORDERED_LIST :
+          format_doc(dd, current, left + 36.0, right);
+          break;
+
+      case MMD_TYPE_LIST_ITEM :
+          if (doctype == MMD_TYPE_ORDERED_LIST)
+          {
+            snprintf(leader, sizeof(leader), "%d. ", i);
+            format_block(dd, current, DOCFONT_REGULAR, SIZE_BODY, left, right, leader);
+          }
+          else
+          {
+            format_block(dd, current, DOCFONT_REGULAR, SIZE_BODY, left, right, /*leader*/"• ");
+          }
+          break;
+
+      case MMD_TYPE_HEADING_1 :
+      case MMD_TYPE_HEADING_2 :
+      case MMD_TYPE_HEADING_3 :
+      case MMD_TYPE_HEADING_4 :
+      case MMD_TYPE_HEADING_5 :
+      case MMD_TYPE_HEADING_6 :
+          if (dd->heading)
+            free(dd->heading);
+
+          dd->heading = mmdCopyAllText(current);
+
+          format_block(dd, current, DOCFONT_BOLD, heading_sizes[curtype - MMD_TYPE_HEADING_1], left, right, /*leader*/NULL);
+          break;
+
+      case MMD_TYPE_PARAGRAPH :
+          format_block(dd, current, DOCFONT_REGULAR, SIZE_BODY, left, right, /*leader*/NULL);
+          break;
+
+      case MMD_TYPE_CODE_BLOCK :
+          {
+            mmd_t	*code;		// Current code block
+            linefrag_t	frag;		// Line fragment
+            double	margin_top;	// Top margin
+
+            frag.x        = left + 36.0;
+            frag.width    = 0.0;
+            frag.height   = SIZE_CODEBLOCK;
+            frag.imagenum = 0;
+            frag.ws       = false;
+            frag.font     = DOCFONT_MONOSPACE;
+            frag.color    = DOCCOLOR_RED;
+            margin_top    = SIZE_CODEBLOCK * LINE_HEIGHT;
+
+            for (code = mmdGetFirstChild(current); code; code = mmdGetNextSibling(code))
+            {
+              frag.text = mmdGetText(code);
+
+              render_line(dd, margin_top, SIZE_CODEBLOCK * LINE_HEIGHT, 1, &frag);
+
+              margin_top = 0.0;
+            }
+          }
+          break;
+    }
+  }
+}
+
+
+//
+// 'output_cb()' - Write PDF data to the standard output...
+//
+
+static ssize_t				// O - Number of bytes written
+output_cb(void       *output_cbdata,	// I - Callback data (not used)
+          const void *buffer,		// I - Buffer to write
+          size_t     bytes)		// I - Number of bytes to write
+{
+  (void)output_cbdata;
+
+  return ((ssize_t)fwrite(buffer, 1, bytes, stdout));
+}
+
+
+//
+// 'main()' - Convert markdown to PDF.
+//
+
+int					// O - Exit status
+main(int  argc,				// I - Number of command-line arguments
+     char *argv[])			// I - Command-line arguments
+{
+  docdata_t	dd;			// Document data
+  docfont_t	fontface;		// Current font
+  mmd_t		*doc;			// Markdown document
+  const char	*value;			// Metadata value
+
+
+  setbuf(stderr, NULL);
+
+  // Get the markdown file from the command-line...
+  if (argc != 2)
+  {
+    fputs("Usage: md2pdf FILENANE.md >FILENAME.pdf\n", stderr);
+    return (1);
+  }
+
+  if ((doc = mmdLoad(/*root*/NULL, argv[1])) == NULL)
+    return (1);
+
+  // Initialize the document data
+  memset(&dd, 0, sizeof(dd));
+
+  dd.media_box.x2 = PAGE_WIDTH;
+  dd.media_box.y2 = PAGE_LENGTH;
+
+  dd.crop_box.x1 = PAGE_LEFT;
+  dd.crop_box.y1 = PAGE_FOOTER;
+  dd.crop_box.x2 = PAGE_RIGHT;
+  dd.crop_box.y2 = PAGE_HEADER;
+
+  dd.art_box.x1  = PAGE_LEFT;
+  dd.art_box.y1  = PAGE_BOTTOM;
+  dd.art_box.x2  = PAGE_RIGHT;
+  dd.art_box.y2  = PAGE_TOP;
+
+  dd.title       = mmdGetMetadata(doc, "title");
+
+  // Output a PDF file to the standard output...
+#ifdef _WIN32
+  setmode(1, O_BINARY);			// Force binary output on Windows
+#endif // _WIN32
+
+  if ((dd.pdf = pdfioFileCreateOutput(output_cb, /*output_cbdata*/NULL, /*version*/NULL, /*media_box*/NULL, /*crop_box*/NULL, /*error_cb*/NULL, /*error_data*/NULL)) == NULL)
+    return (1);
+
+  if ((value = mmdGetMetadata(doc, "author")) != NULL)
+    pdfioFileSetAuthor(dd.pdf, value);
+
+  if ((value = mmdGetMetadata(doc, "keywords")) != NULL)
+    pdfioFileSetKeywords(dd.pdf, value);
+
+  if ((value = mmdGetMetadata(doc, "subject")) != NULL)
+    pdfioFileSetSubject(dd.pdf, value);
+  else if ((value = mmdGetMetadata(doc, "copyright")) != NULL)
+    pdfioFileSetSubject(dd.pdf, value);
+
+  if (dd.title)
+    pdfioFileSetTitle(dd.pdf, dd.title);
+
+  // Add fonts...
+  for (fontface = DOCFONT_REGULAR; fontface < DOCFONT_MAX; fontface ++)
+  {
+    if ((dd.fonts[fontface] = pdfioFileCreateFontObjFromFile(dd.pdf, docfont_filenames[fontface], UNICODE_VALUE)) == NULL)
+      return (1);
+  }
+
+  // Add images...
+  add_images(&dd, doc);
+
+  // Parse the markdown document...
+  format_doc(&dd, doc, dd.art_box.x1, dd.art_box.x2);
+
+  // Close the PDF and return...
+  pdfioStreamClose(dd.st);
+  pdfioFileClose(dd.pdf);
+
+  mmdFree(doc);
+
+  return (0);
+}
--- a/examples/md2pdf.md
+++ b/examples/md2pdf.md
@ -0,0 +1,235 @@
+---
+title: Mini-Markdown Test Document
+...
+
+All heading levels are supported from 1 to 6, using both the ATX and Setext
+forms.  As an indented code block:
+
+    # Heading 1
+    ## Heading 2
+    ### Heading 3
+    #### Heading 4
+    ##### Heading 5
+    ###### Heading 6
+
+    Setext Heading 1
+    ================
+
+    Setext Heading 2
+    ----------------
+
+As block headings:
+
+# Heading 1
+## Heading 2
+### Heading 3
+#### Heading 4
+##### Heading 5
+###### Heading 6
+
+Setext Heading 1
+================
+
+Setext Heading 2
+----------------
+
+And block quotes:
+
+> # BQ Heading 1
+> ## BQ Heading 2
+> ### BQ Heading 3
+> #### BQ Heading 4
+> ##### BQ Heading 5
+> ###### BQ Heading 6
+>
+> Setext Heading 1
+> ================
+>
+> Setext Heading 2
+> ----------------
+
+And ordered lists:
+
+1. First item.
+
+2. Second item.
+
+3. Third item with very long text that wraps
+   across multiple lines.
+
+   With a secondary paragraph associated with
+   the third item.
+
+And unordered lists:
+
+- First item.
+
+ Second item.
+
+* Third item.
+
+* [ ] Fourth item (unchecked)
+
+- [x] Fifth item (checked)
+
+Code block with `\``:
+
+```
+#include <stdio.h>
+
+int main(void)
+{
+  puts("Hello, World!");
+  return (0);
+}
+~~~
+```
+
+Code block with `~`:
+
+~~~
+#include <stdio.h>
+
+int main(void)
+{
+  puts("Hello, World!");
+  return (0);
+}
+```
+~~~
+
+Link to [mmd web site](https://michaelrsweet.github.io/mmd).
+
+Normal link to [Heading 1](@).
+
+Code link to [`Heading 2`](@).
+
+Inner emphasized link to [*Heading 3*](@).
+
+Outer emphasized link to *[Heading 3](@)*.
+
+Inner strong link to [**Heading 4**](@).
+
+Outer strong link to **[Heading 4](@)**.
+
+Implicit link to [reference1][].
+
+Shortcut link to [reference1] without a link title.
+
+[reference1]: https://michaelrsweet.github.io/mmd 'MMD Home Page'
+
+[reference2]: https://michaelrsweet.github.io/mmd/mmd.html 'MMD Documentation'
+
+[reference3]: https://michaelrsweet.github.io/mmd/mmd-160.png "MMD Logo"
+
+Link to [mmd web site][reference1] works.
+Link to [mmd documentation][reference2] works.
+Link to ![mmd logo][reference3] image.
+Link to [bad reference][reference4] doesn't work.
+
+Autolink to <https://michaelrsweet.github.io/mmd>.
+
+Autolink in parenthesis (<https://michaelrsweet.github.io/mmd>).
+
+[Link broken
+across two lines](https://michaelrsweet.github.io/mmd)
+
+Color JPEG Image: ![Color JPEG Image](../testfiles/color.jpg)
+Grayscale JPEG Image: ![Grayscale JPEG Image](../testfiles/gray.jpg)
+Color PNG Image: ![Color PNG Image](../testfiles/pdfio-color.png)
+Grayscale PNG Image: ![Grayscale PNG Image](../testfiles/pdfio-gray.png)
+Indexed PNG Image: ![Indexed PNG Image](../testfiles/pdfio-indexed.png)
+
+This sentence contains *Emphasized Text*, **Bold Text**, and `Code Text` for
+testing the MMD parser.  The `<mmd.h>` header file.
+
+This sentence contains _Emphasized Text_, __Bold Text__, and
+~~Strikethrough Text~~ for testing the MMD parser.
+
+*Emphasized Text Split
+Across Two Lines*
+
+**Bold Text Split
+Across Two Lines**
+
+`Code Text Split
+Across Two lines`
+
+_Emphasized Text Split
+Across Two Lines_
+
+__Bold Text Split
+Across Two Lines__
+
+~~Strikethrough Text Split
+Across Two Lines~~
+
+All work and no play makes Johnny a dull boy.
+All work and no play makes Johnny a dull boy.
+All work and no play makes Johnny a dull boy.
+
+All work and no play makes Johnny a dull boy.
+All work and no play makes Johnny a dull boy.
+All work and no play makes Johnny a dull boy.
+
+\(Escaped Parenthesis)
+
+\(*Emphasized Parenthesis*)
+
+\(**Boldface Parenthesis**)
+
+\(`Code Parenthesis`)
+
+Escaped backtick (`\``)
+
+Table as code:
+
+    | Heading 1 | Heading 2 | Heading 3 |
+    | --------- | --------- | --------- |
+    | Cell 1,1  | Cell 1,2  | Cell 1,3  |
+    | Cell 2,1  | Cell 2,2  | Cell 2,3  |
+    | Cell 3,1  | Cell 3,2  | Cell 3,3  |
+
+Table with leading/trailing pipes:
+
+| Heading 1 | Heading 2 | Heading 3 |
+| --------- | --------- | --------- |
+| Cell 1,1  | Cell 1,2  | Cell 1,3  |
+| Cell 2,1  | Cell 2,2  | Cell 2,3  |
+| Cell 3,1  | Cell 3,2  | Cell 3,3  |
+
+Table without leading/trailing pipes:
+
+Heading 1 | Heading 2 | Heading 3
+--------- | --------- | ---------
+Cell 1,1  | Cell 1,2  | Cell 1,3
+Cell 2,1  | Cell 2,2  | Cell 2,3
+Cell 3,1  | Cell 3,2  | Cell 3,3
+
+Table with alignment:
+
+Left Alignment | Center Alignment | Right Alignment
+:-------- | :-------: | --------:
+Cell 1,1  | Cell 1,2  |        1
+Cell 2,1  | Cell 2,2  |       12
+Cell 3,1  | Cell 3,2  |      123
+
+Table in block quote:
+
+> Heading 1 | Heading 2 | Heading 3
+> --------- | --------- | ---------
+> Cell 1,1  | Cell 1,2  | Cell 1,3
+> Cell 2,1  | Cell 2,2  | Cell 2,3
+> Cell 3,1  | Cell 3,2  | Cell 3,3
+
+# Tests for Bugs/Edge Cases
+
+Paragraph with "|" that should not
+be interpreted as a table.
+
+    code before a bulleted list
+
+- First item
+- Second item
+- Some pathological nested link and inline style features supported by
+  CommonMark like "`******Really Strong Text******`".
--- a/examples/mmd.c
+++ b/examples/mmd.c
--- a/examples/mmd.h
+++ b/examples/mmd.h
@ -0,0 +1,112 @@
+//
+// Header file for miniature markdown library.
+//
+//     https://www.msweet.org/mmd
+//
+// Copyright © 2017-2024 by Michael R Sweet.
+//
+// Licensed under Apache License v2.0.  See the file "LICENSE" for more
+// information.
+//
+
+#ifndef MMD_H
+#  define MMD_H
+#  include <stdio.h>
+#  include <stdbool.h>
+#  ifdef __cplusplus
+extern "C" {
+#  endif // __cplusplus
+
+
+//
+// Constants...
+//
+
+enum mmd_option_e
+{
+  MMD_OPTION_NONE = 0x00,		// No markdown extensions
+  MMD_OPTION_METADATA = 0x01,		// Jekyll metadata extension
+  MMD_OPTION_TABLES = 0x02,		// Github table extension
+  MMD_OPTION_TASKS = 0x04,		// Github task item extension (check boxes)
+  MMD_OPTION_ALL = 0x07			// All supported markdown extensions
+};
+typedef unsigned mmd_option_t;
+
+typedef enum mmd_type_e
+{
+  MMD_TYPE_NONE = -1,
+  MMD_TYPE_DOCUMENT,			// The document root
+  MMD_TYPE_METADATA,			// Document metadata
+  MMD_TYPE_BLOCK_QUOTE,			// <blockquote>
+  MMD_TYPE_ORDERED_LIST,		// <ol>
+  MMD_TYPE_UNORDERED_LIST,		// <ul>
+  MMD_TYPE_LIST_ITEM,			// <li>
+  MMD_TYPE_TABLE,			// <table>
+  MMD_TYPE_TABLE_HEADER,		// <thead>
+  MMD_TYPE_TABLE_BODY,			// <tbody>
+  MMD_TYPE_TABLE_ROW,			// <tr>
+  MMD_TYPE_HEADING_1 = 10,		// <h1>
+  MMD_TYPE_HEADING_2,			// <h2>
+  MMD_TYPE_HEADING_3,			// <h3>
+  MMD_TYPE_HEADING_4,			// <h4>
+  MMD_TYPE_HEADING_5,			// <h5>
+  MMD_TYPE_HEADING_6,			// <h6>
+  MMD_TYPE_PARAGRAPH,			// <p>
+  MMD_TYPE_CODE_BLOCK,			// <pre><code>
+  MMD_TYPE_THEMATIC_BREAK,		// <hr />
+  MMD_TYPE_TABLE_HEADER_CELL,		// <th>
+  MMD_TYPE_TABLE_BODY_CELL_LEFT,	// <td align="left">
+  MMD_TYPE_TABLE_BODY_CELL_CENTER,	// <td align="center">
+  MMD_TYPE_TABLE_BODY_CELL_RIGHT,	// <td align="right">
+  MMD_TYPE_NORMAL_TEXT = 100,		// Normal text
+  MMD_TYPE_EMPHASIZED_TEXT,		// <em>text</em>
+  MMD_TYPE_STRONG_TEXT,			// <strong>text</strong>
+  MMD_TYPE_STRUCK_TEXT,			// <del>text</del>
+  MMD_TYPE_LINKED_TEXT,			// <a href="link">text</a>
+  MMD_TYPE_CODE_TEXT,			// <code>text</code>
+  MMD_TYPE_IMAGE,			// <img src="link" />
+  MMD_TYPE_HARD_BREAK,			// <br />
+  MMD_TYPE_SOFT_BREAK,			// <wbr />
+  MMD_TYPE_METADATA_TEXT,		// name: value
+  MMD_TYPE_CHECKBOX			// [ ] or [x]
+} mmd_type_t;
+
+
+//
+// Types...
+//
+
+typedef struct _mmd_s mmd_t;		// Markdown node
+typedef size_t (*mmd_iocb_t)(void *cbdata, char *buffer, size_t bytes);
+					// mmdLoadIO callback function
+
+//
+// Functions...
+//
+
+extern char         *mmdCopyAllText(mmd_t *node);
+extern void         mmdFree(mmd_t *node);
+extern const char   *mmdGetExtra(mmd_t *node);
+extern mmd_t        *mmdGetFirstChild(mmd_t *node);
+extern mmd_t        *mmdGetLastChild(mmd_t *node);
+extern const char   *mmdGetMetadata(mmd_t *doc, const char *keyword);
+extern mmd_t        *mmdGetNextSibling(mmd_t *node);
+extern mmd_option_t mmdGetOptions(void);
+extern mmd_t        *mmdGetParent(mmd_t *node);
+extern mmd_t        *mmdGetPrevSibling(mmd_t *node);
+extern const char   *mmdGetText(mmd_t *node);
+extern mmd_type_t   mmdGetType(mmd_t *node);
+extern const char   *mmdGetURL(mmd_t *node);
+extern bool         mmdGetWhitespace(mmd_t *node);
+extern bool         mmdIsBlock(mmd_t *node);
+extern mmd_t        *mmdLoad(mmd_t *root, const char *filename);
+extern mmd_t        *mmdLoadFile(mmd_t *root, FILE *fp);
+extern mmd_t        *mmdLoadIO(mmd_t *root, mmd_iocb_t cb, void *cbdata);
+extern mmd_t        *mmdLoadString(mmd_t *root, const char *s);
+extern void         mmdSetOptions(mmd_option_t options);
+
+
+#  ifdef __cplusplus
+}
+#  endif // __cplusplus
+#endif // !MMD_H
--- a/pdfio-array.c
+++ b/pdfio-array.c
@ -1,7 +1,7 @@
 //
 // PDF array functions for PDFio.
 //
-// Copyright © 2021 by Michael R Sweet.
+// Copyright © 2021-2024 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@ -363,6 +363,9 @@ _pdfioArrayDebug(pdfio_array_t *a,	// I - Array
  _pdfio_value_t	*v;		// Current value


+  if (!a)
+    return;
+
  putc('[', fp);
  for (i = a->num_values, v = a->values; i > 0; i --, v ++)
    _pdfioValueDebug(v, fp);
@ -634,6 +637,28 @@ _pdfioArrayRead(pdfio_file_t   *pdf,	// I - PDF file
 }


+//
+// 'pdfioArrayRemove()' - Remove an array entry.
+//
+
+bool					// O - `true` on success, `false` otherwise
+pdfioArrayRemove(pdfio_array_t *a,	// I - Array
+                 size_t        n)	// I - Index
+{
+  if (!a || n >= a->num_values)
+    return (false);
+
+  if (a->values[n].type == PDFIO_VALTYPE_BINARY)
+    free(a->values[n].value.binary.data);
+
+  a->num_values --;
+  if (n < a->num_values)
+    memmove(a->values + n, a->values + n + 1, (a->num_values - n) * sizeof(_pdfio_value_t));
+
+  return (true);
+}
+
+
 //
 // '_pdfioArrayWrite()' - Write an array to a PDF file.
 //
--- a/pdfio-content.c
+++ b/pdfio-content.c
@ -2349,7 +2349,7 @@ pdfioPageDictAddColorSpace(
 bool					// O - `true` on success, `false` on failure
 pdfioPageDictAddFont(
    pdfio_dict_t *dict,			// I - Page dictionary
-    const char   *name,			// I - Font name
+    const char   *name,			// I - Font name; must not contain spaces
    pdfio_obj_t  *obj)			// I - Font object
 {
  pdfio_dict_t	*resources;		// Resource dictionary
--- a/pdfio-dict.c
+++ b/pdfio-dict.c
@ -1,7 +1,7 @@
 //
 // PDF dictionary functions for PDFio.
 //
-// Copyright © 2021-2023 by Michael R Sweet.
+// Copyright © 2021-2024 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@ -18,19 +18,22 @@ static int	compare_pairs(_pdfio_pair_t *a, _pdfio_pair_t *b);


 //
-// '_pdfioDictClear()' - Remove a key/value pair from a dictionary.
+// 'pdfioDictClear()' - Remove a key/value pair from a dictionary.
 //

-void
-_pdfioDictClear(pdfio_dict_t *dict,	// I - Dictionary
-                const char   *key)	// I - Key
+bool					// O - `true` if cleared, `false` otherwise
+pdfioDictClear(pdfio_dict_t *dict,	// I - Dictionary
+               const char   *key)	// I - Key
 {
  size_t	idx;			// Index into pairs
  _pdfio_pair_t	*pair,			// Current pair
 		pkey;			// Search key


-  PDFIO_DEBUG("_pdfioDictClear(dict=%p, key=\"%s\")\n", dict, key);
+  PDFIO_DEBUG("pdfioDictClear(dict=%p, key=\"%s\")\n", dict, key);
+
+  if (!dict || !key)
+    return (false);

  // See if the key is already set...
  if (dict->num_pairs > 0)
@ -48,8 +51,12 @@ _pdfioDictClear(pdfio_dict_t *dict,	// I - Dictionary

      if (idx < dict->num_pairs)
        memmove(pair, pair + 1, (dict->num_pairs - idx) * sizeof(_pdfio_pair_t));
+
+      return (true);
    }
  }
+
+  return (false);
 }


@ -194,6 +201,9 @@ _pdfioDictDebug(pdfio_dict_t *dict,	// I - Dictionary
  _pdfio_pair_t	*pair;			// Current pair


+  if (!dict)
+    return;
+
  for (i = dict->num_pairs, pair = dict->pairs; i > 0; i --, pair ++)
  {
    fprintf(fp, "/%s", pair->key);
@ -332,6 +342,18 @@ pdfioDictGetDict(pdfio_dict_t *dict,	// I - Dictionary
 }


+//
+// 'pdfioDictGetKey()' - Get the key for the specified pair.
+//
+
+const char *				// O - Key for specified pair
+pdfioDictGetKey(pdfio_dict_t *dict,	// I - Dictionary
+                size_t       n)		// I - Pair index (`0`-based)
+{
+  return ((dict && n < dict->num_pairs) ? dict->pairs[n].key : NULL);
+}
+
+
 //
 // 'pdfioDictGetName()' - Get a key name value from a dictionary.
 //
@ -350,6 +372,17 @@ pdfioDictGetName(pdfio_dict_t *dict,	// I - Dictionary
 }


+//
+// 'pdfioDictGetNumPairs()' - Get the number of key/value pairs in a dictionary.
+//
+
+size_t					// O - Number of pairs
+pdfioDictGetNumPairs(pdfio_dict_t *dict)// I - Dictionary
+{
+  return (dict ? dict->num_pairs : 0);
+}
+
+
 //
 // 'pdfioDictGetNumber()' - Get a key number value from a dictionary.
 //
--- a/pdfio-file.c
+++ b/pdfio-file.c
@ -188,6 +188,8 @@ pdfioFileCreate(
  int		fd;			// File descriptor


+  PDFIO_DEBUG("pdfioFileCreate(filename=\"%s\", version=\"%s\", media_box=%p, crop_box=%p, error_cb=%p, error_cbdata=%p)\n", filename, version, (void *)media_box, (void *)crop_box, (void *)error_cb, (void *)error_cbdata);
+
  // Range check input...
  if (!filename)
    return (NULL);
@ -242,6 +244,35 @@ pdfioFileCreateArrayObj(
 }


+//
+// 'pdfioFileCreateNameObj()' - Create a new object in a PDF file containing a name.
+//
+// This function creates a new object with a name value in a PDF file.
+// You must call @link pdfioObjClose@ to write the object to the file.
+//
+
+pdfio_obj_t *				// O - New object
+pdfioFileCreateNameObj(
+    pdfio_file_t *pdf,			// I - PDF file
+    const char   *name)			// I - Name value
+{
+  _pdfio_value_t	value;		// Object value
+
+
+  // Range check input...
+  if (!pdf || !name)
+    return (NULL);
+
+  value.type         = PDFIO_VALTYPE_NAME;
+  value.value.name   = pdfioStringCreate(pdf, name);
+
+  if (!value.value.name)
+    return (NULL);
+
+  return (_pdfioFileCreateObj(pdf, NULL, &value));
+}
+
+
 //
 // 'pdfioFileCreateNumberObj()' - Create a new object in a PDF file containing a number.
 //
@ -390,6 +421,8 @@ pdfioFileCreateOutput(
    pdfio_error_cb_t  error_cb,		// I - Error callback or `NULL` for default
    void              *error_cbdata)	// I - Error callback data, if any
 {
+  PDFIO_DEBUG("pdfioFileCreate(output_cb=%p, output_cbdata=%p, version=\"%s\", media_box=%p, crop_box=%p, error_cb=%p, error_cbdata=%p)\n", (void *)output_cb, (void *)output_cbdata, version, (void *)media_box, (void *)crop_box, (void *)error_cb, (void *)error_cbdata);
+
  return (create_common("output.pdf", /*fd*/-1, output_cb, output_cbdata, version, media_box, crop_box, error_cb, error_cbdata));
 }

@ -524,6 +557,8 @@ pdfioFileCreateTemporary(
  unsigned	tmpnum;			// Temporary filename number


+  PDFIO_DEBUG("pdfioFileCreate(buffer=%p, bufsize=%lu, version=\"%s\", media_box=%p, crop_box=%p, error_cb=%p, error_cbdata=%p)\n", (void *)buffer, (unsigned long)bufsize, version, (void *)media_box, (void *)crop_box, (void *)error_cb, (void *)error_cbdata);
+
  // Range check input...
  if (!buffer || bufsize < 32)
  {
@ -648,11 +683,12 @@ pdfioFileFindObj(
  if ((current = number - 1) >= pdf->num_objs)
    current = pdf->num_objs / 2;

-  PDFIO_DEBUG("pdfioFileFindObj: objs[current=%lu]=%p\n", (unsigned long)current, (void *)pdf->objs[current]);
+  PDFIO_DEBUG("pdfioFileFindObj: objs[current=%lu]=%p(%lu)\n", (unsigned long)current, (void *)pdf->objs[current], (unsigned long)(pdf->objs[current] ? pdf->objs[current]->number : 0));

  if (number == pdf->objs[current]->number)
  {
    // Fast match...
+    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)current, pdf->objs[current]);
    return (pdf->objs[current]);
  }
  else if (number < pdf->objs[current]->number)
@ -679,11 +715,20 @@ pdfioFileFindObj(
  }

  if (number == pdf->objs[left]->number)
+  {
+    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)left, pdf->objs[left]);
    return (pdf->objs[left]);
+  }
  else if (number == pdf->objs[right]->number)
+  {
+    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)right, pdf->objs[right]);
    return (pdf->objs[right]);
+  }
  else
+  {
+    PDFIO_DEBUG("pdfioFileFindObj: Returning NULL\n");
    return (NULL);
+  }
 }


@ -928,6 +973,8 @@ pdfioFileOpen(
  off_t		xref_offset;		// Offset to xref table


+  PDFIO_DEBUG("pdfioFileOpen(filename=\"%s\", password_cb=%p, password_cbdata=%p, error_cb=%p, error_cbdata=%p)\n", filename, (void *)password_cb, (void *)password_cbdata, (void *)error_cb, (void *)error_cbdata);
+
  // Range check input...
  if (!filename)
    return (NULL);
@ -1285,6 +1332,8 @@ create_common(
  unsigned char	id_value[16];		// File ID value


+  PDFIO_DEBUG("create_common(filename=\"%s\", fd=%d, output_cb=%p, output_cbdata=%p, version=\"%s\", media_box=%p, crop_box=%p, error_cb=%p, error_cbdata=%p)\n", filename, fd, (void *)output_cb, (void *)output_cbdata, version, (void *)media_box, (void *)crop_box, (void *)error_cb, (void *)error_cbdata);
+
  // Range check input...
  if (!filename || (fd < 0 && !output_cb))
    return (NULL);
@ -1928,7 +1977,7 @@ load_xref(
      {
        PDFIO_DEBUG("load_xref: '%s' at offset %lu\n", line, (unsigned long)trailer_offset);

-	if (!strncmp(line, "trailer", 7) && (!line[7] || isspace(line[7] & 255)))
+	if (!strncmp(line, "trailer", 7) && (!line[7] || isspace(line[7] & 255) || line[7] == '<'))
 	{
 	  if (line[7])
 	  {
--- a/pdfio-object.c
+++ b/pdfio-object.c
@ -1,7 +1,7 @@
 //
 // PDF object functions for PDFio.
 //
-// Copyright © 2021-2023 by Michael R Sweet.
+// Copyright © 2021-2024 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@ -99,7 +99,7 @@ pdfioObjCopy(pdfio_file_t *pdf,		// I - PDF file
    return (NULL);

  if (dstobj->value.type == PDFIO_VALTYPE_DICT)
-    _pdfioDictClear(dstobj->value.value.dict, "Length");
+    pdfioDictClear(dstobj->value.value.dict, "Length");

  if (srcobj->stream_offset)
  {
@ -333,6 +333,26 @@ pdfioObjGetLength(pdfio_obj_t *obj)	// I - Object
 }


+//
+// 'pdfioObjGetName()' - Get the name value associated with an object.
+//
+
+const char *				// O - Dictionary or `NULL` on error
+pdfioObjGetName(pdfio_obj_t *obj)	// I - Object
+{
+  if (!obj)
+    return (NULL);
+
+  if (obj->value.type == PDFIO_VALTYPE_NONE)
+    _pdfioObjLoad(obj);
+
+  if (obj->value.type == PDFIO_VALTYPE_NAME)
+    return (obj->value.value.name);
+  else
+    return (NULL);
+}
+
+
 //
 // 'pdfioObjGetNumber()' - Get the object's number.
 //
@ -347,8 +367,21 @@ pdfioObjGetNumber(pdfio_obj_t *obj)	// I - Object
 //
 // 'pdfioObjGetSubtype()' - Get an object's subtype.
 //
+// This function returns an object's PDF subtype name, if any.  Common subtype
+// names include:
+//
+// - "CIDFontType0": A CID Type0 font
+// - "CIDFontType2": A CID TrueType font
+// - "Image": An image or image mask
+// - "Form": A fillable form
+// - "OpenType": An OpenType font
+// - "Type0": A composite font
+// - "Type1": A PostScript Type1 font
+// - "Type3": A PDF Type3 font
+// - "TrueType": A TrueType font
+//

-const char *				// O - Object subtype
+const char *				// O - Object subtype name or `NULL` for none
 pdfioObjGetSubtype(pdfio_obj_t *obj)	// I - Object
 {
  pdfio_dict_t	*dict;			// Object dictionary
@ -364,8 +397,21 @@ pdfioObjGetSubtype(pdfio_obj_t *obj)	// I - Object
 //
 // 'pdfioObjGetType()' - Get an object's type.
 //
+// This function returns an object's PDF type name, if any. Common type names
+// include:
+//
+// - "CMap": A character map for composite fonts
+// - "Font": An embedded font (@link pdfioObjGetSubtype@ will tell you the
+//   font format)
+// - "FontDescriptor": A font descriptor
+// - "Page": A (visible) page
+// - "Pages": A page tree node
+// - "Template": An invisible template page
+// - "XObject": An image, image mask, or form (@link pdfioObjGetSubtype@ will
+//   tell you which)
+//

-const char *				// O - Object type
+const char *				// O - Object type name or `NULL` for none
 pdfioObjGetType(pdfio_obj_t *obj)	// I - Object
 {
  pdfio_dict_t	*dict;			// Object dictionary
--- a/pdfio-private.h
+++ b/pdfio-private.h
@ -353,7 +353,6 @@ extern void		_pdfioCryptoSHA256Init(_pdfio_sha256_t *ctx) _PDFIO_INTERNAL;
 extern void		_pdfioCryptoSHA256Finish(_pdfio_sha256_t *ctx, uint8_t *Message_Digest) _PDFIO_INTERNAL;
 extern bool		_pdfioCryptoUnlock(pdfio_file_t *pdf, pdfio_password_cb_t password_cb, void *password_data) _PDFIO_INTERNAL;

-extern void		_pdfioDictClear(pdfio_dict_t *dict, const char *key) _PDFIO_INTERNAL;
 extern bool		_pdfioDictDecrypt(pdfio_file_t *pdf, pdfio_obj_t *obj, pdfio_dict_t *dict, size_t depth) _PDFIO_INTERNAL;
 extern void		_pdfioDictDebug(pdfio_dict_t *dict, FILE *fp) _PDFIO_INTERNAL;
 extern void		_pdfioDictDelete(pdfio_dict_t *dict) _PDFIO_INTERNAL;
--- a/pdfio-stream.c
+++ b/pdfio-stream.c
@ -408,6 +408,7 @@ _pdfioStreamOpen(pdfio_obj_t *obj,	// I - Object
  pdfio_stream_t	*st;		// Stream
  pdfio_dict_t		*dict = pdfioObjGetDict(obj);
 					// Object dictionary
+  const char		*type;		// Object type


  PDFIO_DEBUG("_pdfioStreamOpen(obj=%p(%u), decode=%s)\n", obj, (unsigned)obj->number, decode ? "true" : "false");
@ -434,7 +435,9 @@ _pdfioStreamOpen(pdfio_obj_t *obj,	// I - Object
    return (NULL);
  }

-  if (obj->pdf->encryption)
+  type = pdfioObjGetType(obj);
+
+  if (obj->pdf->encryption && (!type || strcmp(type, "XRef")))
  {
    uint8_t	iv[64];			// Initialization vector
    size_t	ivlen;			// Length of initialization vector, if any
@ -1061,19 +1064,11 @@ stream_read(pdfio_stream_t *st,		// I - Stream
      st->flate.next_out  = (Bytef *)buffer;
      st->flate.avail_out = (uInt)bytes;

-      avail_in  = st->flate.avail_in;
-      avail_out = st->flate.avail_out;
-
      if ((status = inflate(&(st->flate), Z_NO_FLUSH)) < Z_OK)
      {
 	_pdfioFileError(st->pdf, "Unable to decompress stream data for object %ld: %s", (long)st->obj->number, zstrerror(status));
 	return (-1);
      }
-      else if (avail_in == st->flate.avail_in && avail_out == st->flate.avail_out)
-      {
-	_pdfioFileError(st->pdf, "Corrupt stream data.");
-	return (-1);
-      }

      return (st->flate.next_out - (Bytef *)buffer);
    }
--- a/pdfio-value.c
+++ b/pdfio-value.c
@ -215,6 +215,9 @@ void
 _pdfioValueDebug(_pdfio_value_t *v,	// I - Value
 		 FILE           *fp)	// I - Output file
 {
+  if (!v)
+    return;
+
  switch (v->type)
  {
    case PDFIO_VALTYPE_ARRAY :
--- a/pdfio.h
+++ b/pdfio.h
@ -23,7 +23,7 @@ extern "C" {
 // Version number...
 //

-#  define PDFIO_VERSION		"1.3.0"
+#  define PDFIO_VERSION		"1.4.0"


 //
@ -151,7 +151,9 @@ extern pdfio_obj_t	*pdfioArrayGetObj(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;
 extern size_t		pdfioArrayGetSize(pdfio_array_t *a) _PDFIO_PUBLIC;
 extern const char	*pdfioArrayGetString(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;
 extern pdfio_valtype_t	pdfioArrayGetType(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;
+extern bool		pdfioArrayRemove(pdfio_array_t *a, size_t n) _PDFIO_PUBLIC;

+extern bool		pdfioDictClear(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
 extern pdfio_dict_t	*pdfioDictCopy(pdfio_file_t *pdf, pdfio_dict_t *dict) _PDFIO_PUBLIC;
 extern pdfio_dict_t	*pdfioDictCreate(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern pdfio_array_t	*pdfioDictGetArray(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
@ -159,7 +161,9 @@ extern unsigned char	*pdfioDictGetBinary(pdfio_dict_t *dict, const char *key, si
 extern bool		pdfioDictGetBoolean(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
 extern time_t		pdfioDictGetDate(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
 extern pdfio_dict_t	*pdfioDictGetDict(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
+extern const char	*pdfioDictGetKey(pdfio_dict_t *dict, size_t n) _PDFIO_PUBLIC;
 extern const char	*pdfioDictGetName(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
+extern size_t		pdfioDictGetNumPairs(pdfio_dict_t *dict) _PDFIO_PUBLIC;
 extern double		pdfioDictGetNumber(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
 extern pdfio_obj_t	*pdfioDictGetObj(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
 extern pdfio_rect_t	*pdfioDictGetRect(pdfio_dict_t *dict, const char *key, pdfio_rect_t *rect) _PDFIO_PUBLIC;
@ -182,6 +186,7 @@ extern bool		pdfioDictSetStringf(pdfio_dict_t *dict, const char *key, const char
 extern bool		pdfioFileClose(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern pdfio_file_t	*pdfioFileCreate(const char *filename, const char *version, pdfio_rect_t *media_box, pdfio_rect_t *crop_box, pdfio_error_cb_t error_cb, void *error_data) _PDFIO_PUBLIC;
 extern pdfio_obj_t	*pdfioFileCreateArrayObj(pdfio_file_t *pdf, pdfio_array_t *array) _PDFIO_PUBLIC;
+extern pdfio_obj_t	*pdfioFileCreateNameObj(pdfio_file_t *pdf, const char *name) _PDFIO_PUBLIC;
 extern pdfio_obj_t	*pdfioFileCreateNumberObj(pdfio_file_t *pdf, double number) _PDFIO_PUBLIC;
 extern pdfio_obj_t	*pdfioFileCreateObj(pdfio_file_t *pdf, pdfio_dict_t *dict) _PDFIO_PUBLIC;
 extern pdfio_file_t	*pdfioFileCreateOutput(pdfio_output_cb_t output_cb, void *output_ctx, const char *version, pdfio_rect_t *media_box, pdfio_rect_t *crop_box, pdfio_error_cb_t error_cb, void *error_data) _PDFIO_PUBLIC;
@ -222,6 +227,7 @@ extern pdfio_array_t	*pdfioObjGetArray(pdfio_obj_t *obj) _PDFIO_PUBLIC;
 extern pdfio_dict_t	*pdfioObjGetDict(pdfio_obj_t *obj) _PDFIO_PUBLIC;
 extern unsigned short	pdfioObjGetGeneration(pdfio_obj_t *obj) _PDFIO_PUBLIC;
 extern size_t		pdfioObjGetLength(pdfio_obj_t *obj) _PDFIO_PUBLIC;
+extern const char	*pdfioObjGetName(pdfio_obj_t *obj) _PDFIO_PUBLIC;
 extern size_t		pdfioObjGetNumber(pdfio_obj_t *obj) _PDFIO_PUBLIC;
 extern const char	*pdfioObjGetSubtype(pdfio_obj_t *obj) _PDFIO_PUBLIC;
 extern const char	*pdfioObjGetType(pdfio_obj_t *obj) _PDFIO_PUBLIC;
--- a/pdfio1.def
+++ b/pdfio1.def
@ -1,7 +1,8 @@
 LIBRARY pdfio1
-VERSION 1.2
+VERSION 1.4
 EXPORTS
 _pdfioArrayDebug
+_pdfioArrayDecrypt
 _pdfioArrayDelete
 _pdfioArrayGetValue
 _pdfioArrayRead
@ -22,8 +23,8 @@ _pdfioCryptoSHA256Append
 _pdfioCryptoSHA256Finish
 _pdfioCryptoSHA256Init
 _pdfioCryptoUnlock
-_pdfioDictClear
 _pdfioDictDebug
+_pdfioDictDecrypt
 _pdfioDictDelete
 _pdfioDictGetValue
 _pdfioDictRead
@ -61,9 +62,12 @@ _pdfioTokenPush
 _pdfioTokenRead
 _pdfioValueCopy
 _pdfioValueDebug
+_pdfioValueDecrypt
 _pdfioValueDelete
 _pdfioValueRead
 _pdfioValueWrite
+_pdfio_strtod
+_pdfio_vsnprintf
 pdfioArrayAppendArray
 pdfioArrayAppendBinary
 pdfioArrayAppendBoolean
@ -91,6 +95,7 @@ pdfioArrayGetObj
 pdfioArrayGetSize
 pdfioArrayGetString
 pdfioArrayGetType
+pdfioArrayRemove
 pdfioContentClip
 pdfioContentDrawImage
 pdfioContentFill
@ -148,6 +153,7 @@ pdfioContentTextNextLine
 pdfioContentTextShow
 pdfioContentTextShowJustified
 pdfioContentTextShowf
+pdfioDictClear
 pdfioDictCopy
 pdfioDictCreate
 pdfioDictGetArray
@ -155,7 +161,9 @@ pdfioDictGetBinary
 pdfioDictGetBoolean
 pdfioDictGetDate
 pdfioDictGetDict
+pdfioDictGetKey
 pdfioDictGetName
+pdfioDictGetNumPairs
 pdfioDictGetNumber
 pdfioDictGetObj
 pdfioDictGetRect
@ -182,6 +190,7 @@ pdfioFileCreateFontObjFromFile
 pdfioFileCreateICCObjFromFile
 pdfioFileCreateImageObjFromData
 pdfioFileCreateImageObjFromFile
+pdfioFileCreateNameObj
 pdfioFileCreateNumberObj
 pdfioFileCreateObj
 pdfioFileCreateOutput
@ -190,6 +199,7 @@ pdfioFileCreateStringObj
 pdfioFileCreateTemporary
 pdfioFileFindObj
 pdfioFileGetAuthor
+pdfioFileGetCatalog
 pdfioFileGetCreationDate
 pdfioFileGetCreator
 pdfioFileGetID
@ -222,6 +232,7 @@ pdfioObjGetArray
 pdfioObjGetDict
 pdfioObjGetGeneration
 pdfioObjGetLength
+pdfioObjGetName
 pdfioObjGetNumber
 pdfioObjGetSubtype
 pdfioObjGetType
--- a/pdfio_native.nuspec
+++ b/pdfio_native.nuspec
@ -3,7 +3,7 @@
    <metadata>
        <id>pdfio_native</id>
        <title>PDFio Library for VS2019+</title>
-        <version>1.3.0</version>
+        <version>1.3.2</version>
        <authors>Michael R Sweet</authors>
        <owners>michaelrsweet</owners>
        <projectUrl>https://github.com/michaelrsweet/pappl</projectUrl>
@ -16,7 +16,7 @@
        <copyright>Copyright © 2019-2024 by Michael R Sweet</copyright>
        <tags>pdf file native</tags>
 	<dependencies>
-	    <dependency id="pdfio_native.redist" version="1.3.0" />
+	    <dependency id="pdfio_native.redist" version="1.3.2" />
 	    <dependency id="zlib_native.redist" version="1.2.11" />
 	</dependencies>
    </metadata>
--- a/pdfio_native.redist.nuspec
+++ b/pdfio_native.redist.nuspec
@ -3,7 +3,7 @@
    <metadata>
        <id>pdfio_native.redist</id>
        <title>PDFio Library for VS2019+</title>
-        <version>1.3.0</version>
+        <version>1.3.2</version>
        <authors>Michael R Sweet</authors>
        <owners>michaelrsweet</owners>
        <projectUrl>https://github.com/michaelrsweet/pappl</projectUrl>
--- a/testpdfio.c
+++ b/testpdfio.c
@ -27,7 +27,7 @@
 //

 static int	do_crypto_tests(void);
-static int	do_test_file(const char *filename, int objnum, bool verbose);
+static int	do_test_file(const char *filename, int objnum, const char *password, bool verbose);
 static int	do_unit_tests(void);
 static int	draw_image(pdfio_stream_t *st, const char *name, double x, double y, double w, double h, const char *label);
 static bool	error_cb(pdfio_file_t *pdf, const char *message, bool *error);
@ -37,6 +37,7 @@ static const char *password_cb(void *data, const char *filename);
 static int	read_unit_file(const char *filename, size_t num_pages, size_t first_image, bool is_output);
 static ssize_t	token_consume_cb(const char **s, size_t bytes);
 static ssize_t	token_peek_cb(const char **s, char *buffer, size_t bytes);
+static int	usage(FILE *fp);
 static int	verify_image(pdfio_file_t *pdf, size_t number);
 static int	write_alpha_test(pdfio_file_t *pdf, int number, pdfio_obj_t *font);
 static int	write_color_patch(pdfio_stream_t *st, bool device);
@ -59,22 +60,33 @@ int					// O - Exit status
 main(int  argc,				// I - Number of command-line arguments
     char *argv[])			// I - Command-line arguments
 {
-  int	ret = 0;			// Return value
+  int		ret = 0;		// Return value


-  fprintf(stderr, "testpdfio: Test locale is \"%s\".\n", setlocale(LC_ALL, getenv("LANG")));
-
  if (argc > 1)
  {
    int		i;			// Looping var
+    const char	*password = NULL;	// Password
    bool	verbose = false;	// Be verbose?

    for (i = 1; i < argc; i ++)
    {
      if (!strcmp(argv[i], "--help"))
      {
-        puts("Usage: ./testpdfio [--help] [--verbose] [filename [objnum] ...]");
-        return (0);
+        return (usage(stdout));
+      }
+      else if (!strcmp(argv[i], "--password"))
+      {
+        i ++;
+        if (i < argc)
+        {
+          password = argv[i];
+        }
+        else
+        {
+          fputs("testpdfio: Missing password after '--password'.\n", stderr);
+          return (usage(stderr));
+        }
      }
      else if (!strcmp(argv[i], "--verbose"))
      {
@ -82,24 +94,27 @@ main(int  argc,				// I - Number of command-line arguments
      }
      else if (argv[i][0] == '-')
      {
-        printf("Unknown option '%s'.\n\n", argv[i]);
-        puts("Usage: ./testpdfio [--help] [--verbose] [filename [objnum] ...]");
-        return (1);
+        fprintf(stderr, "testpdfio: Unknown option '%s'.\n", argv[i]);
+        return (usage(stderr));
      }
      else if ((i + 1) < argc && isdigit(argv[i + 1][0] & 255))
      {
        // filename.pdf object-number
-        if (do_test_file(argv[i], atoi(argv[i + 1]), verbose))
+        if (do_test_file(argv[i], atoi(argv[i + 1]), password, verbose))
 	  ret = 1;

 	i ++;
      }
-      else if (do_test_file(argv[i], 0, verbose))
+      else if (do_test_file(argv[i], 0, password, verbose))
+      {
        ret = 1;
+      }
    }
  }
  else
  {
+    fprintf(stderr, "testpdfio: Test locale is \"%s\".\n", setlocale(LC_ALL, getenv("LANG")));
+
 #if _WIN32
    // Windows puts executables in Platform/Configuration subdirs...
    if (!_access("../../testfiles", 0))
@ -363,6 +378,7 @@ do_crypto_tests(void)
 static int				// O - Exit status
 do_test_file(const char *filename,	// I - PDF filename
             int        objnum,		// I - Object number to dump, if any
+             const char *password,	// I - Password for file
             bool       verbose)	// I - Be verbose?
 {
  bool		error = false;		// Have we shown an error yet?
@ -381,7 +397,7 @@ do_test_file(const char *filename,	// I - PDF filename
    fflush(stdout);
  }

-  if ((pdf = pdfioFileOpen(filename, /*password_cb*/NULL, /*password_data*/NULL, (pdfio_error_cb_t)error_cb, &error)) != NULL)
+  if ((pdf = pdfioFileOpen(filename, password_cb, (void *)password, (pdfio_error_cb_t)error_cb, &error)) != NULL)
  {
    if (objnum)
    {
@ -1559,6 +1575,23 @@ token_peek_cb(const char **s,		// IO - Test string
 }


+//
+// 'usage()' - Show program usage.
+//
+
+static int				// O - Exit status
+usage(FILE *fp)				// I - Output file
+{
+  fputs("Usage: ./testpdfio [OPTIONS] [FILENAME [OBJNUM]] ...\n", fp);
+  fputs("Options:\n", fp);
+  fputs("  --help               Show program help.\n", fp);
+  fputs("  --password PASSWORD  Set PDF password.\n", fp);
+  fputs("  --verbose            Be verbose.\n", fp);
+
+  return (fp != stdout);
+}
+
+
 //
 // 'verify_image()' - Verify an image object.
 //
--- a/testttf.c
+++ b/testttf.c
@ -3,7 +3,7 @@
 //
 //     https://github.com/michaelrsweet/ttf
 //
-// Copyright © 2018-2023 by Michael R Sweet.
+// Copyright © 2018-2024 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@ -120,6 +120,7 @@ test_font(const char *filename)		// I - Font filename


  printf("ttfCreate(\"%s\"): ", filename);
+  fflush(stdout);
  if ((font = ttfCreate(filename, 0, error_cb, NULL)) != NULL)
    puts("PASS");
  else
--- a/ttf.c
+++ b/ttf.c
@ -3,7 +3,7 @@
 //
 //     https://github.com/michaelrsweet/ttf
 //
-// Copyright © 2018-2023 by Michael R Sweet.
+// Copyright © 2018-2024 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@ -62,7 +62,7 @@
 #  define O_CREAT	_O_CREAT
 #  define O_TRUNC	_O_TRUNC

-typedef __int64 ssize_t;		// POSIX type not present on Windows...
+typedef __int64 ssize_t;		// POSIX type not present on Windows... @private@

 #else
 #  include <unistd.h>
@ -99,6 +99,8 @@ typedef __int64 ssize_t;		// POSIX type not present on Windows...
 //

 #define TTF_FONT_MAX_CHAR	262144	// Maximum number of character values
+#define TTF_FONT_MAX_GROUPS	65536	// Maximum number of sub-groups
+#define TTF_FONT_MAX_NAMES	16777216// Maximum size of names table we support


 //
@ -254,7 +256,7 @@ typedef struct _ttf_off_hhea_s		// Horizontal header
 {
  short		ascender,		// Ascender
 		descender;		// Descender
-  int		numberOfHMetrics;	// Number of horizontal metrics
+  unsigned short numberOfHMetrics;	// Number of horizontal metrics
 } _ttf_off_hhea_t;

 typedef struct _ttf_off_os_2_s		// OS/2 information
@ -297,7 +299,28 @@ static unsigned	seek_table(ttf_t *font, unsigned tag, unsigned offset, bool requ


 //
-// 'ttfCreate()' - Create a new font object for the named font family.
+// 'ttfCreate()' - Create a new font object for the named font file.
+//
+// This function creates a new font object for the named TrueType or OpenType
+// font file or collection.  The "filename" argument specifies the name of the
+// file to read.
+//
+// The "idx" argument specifies the font to load from a collection - the first
+// font is number `0`.  Once created, you can call the @link ttfGetNumFonts@
+// function to determine whether the loaded font file is a collection with more
+// than one font.
+//
+// The "err_cb" and "err_data" arguments specify a callback function and data
+// pointer for receiving error messages.  If `NULL`, errors are sent to the
+// `stderr` file.  The callback function receives the data pointer and a text
+// message string, for example:
+//
+// ```
+// void my_err_cb(void *err_data, const char *message)
+// {
+//   fprintf(stderr, "ERROR: %s\n", message);
+// }
+// ```
 //

 ttf_t *					// O - New font object
@ -550,6 +573,10 @@ ttfGetAscent(ttf_t *font)		// I - Font
 //
 // 'ttfGetBounds()' - Get the bounds of all characters in a font.
 //
+// This function gets the bounds of all characters in a font.  The "bounds"
+// argument is a pointer to a `ttf_rect_t` structure that will be filled with
+// the limits for characters in the font scaled to a 1000x1000 unit square.
+//

 ttf_rect_t *				// O - Bounds or `NULL` on error
 ttfGetBounds(ttf_t      *font,		// I - Font
@ -631,8 +658,11 @@ ttfGetDescent(ttf_t *font)		// I - Font
 //
 // 'ttfGetExtents()' - Get the extents of a UTF-8 string.
 //
-// This function computes the extents of a UTF-8 string when rendered using the
-// specified font and size.
+// This function computes the extents of the UTF-8 string "s" when rendered
+// using the specified font "font" and size "size".  The "extents" argument is
+// a pointer to a `ttf_rect_t` structure that is filled with the extents of a
+// simple rendering of the string with no kerning or rewriting applied.  The
+// values are scaled using the specified font size.
 //

 ttf_rect_t *				// O - Pointer to extents or `NULL` on error
@ -1272,20 +1302,38 @@ read_cmap(ttf_t *font)			// I - Font
          for (i = 0; i < numGlyphIdArray; i ++)
            glyphIdArray[i] = read_ushort(font);

-#ifdef DEBUG
-          for (i = 0; i < segCount; i ++)
-            TTF_DEBUG("read_cmap: segment[%d].startCode=%d, endCode=%d, idDelta=%d, idRangeOffset=%d\n", i, segments[i].startCode, segments[i].endCode, segments[i].idDelta, segments[i].idRangeOffset);
+          for (i = 0, segment = segments; i < segCount; i ++, segment ++)
+          {
+            TTF_DEBUG("read_cmap: segment[%d].startCode=%d, endCode=%d, idDelta=%d, idRangeOffset=%d\n", i, segment->startCode, segment->endCode, segment->idDelta, segment->idRangeOffset);

+            if (segment->startCode > segment->endCode)
+            {
+	      errorf(font, "Bad cmap table segment %u to %u.", segments->startCode, segment->endCode);
+	      free(segments);
+	      free(glyphIdArray);
+	      return (false);
+            }
+
+            // Based on the end code of the segment table, allocate space for the
+            // uncompressed cmap table...
+            if (segment->endCode >= font->num_cmap)
+	      font->num_cmap = segment->endCode + 1;
+          }
+
+#ifdef DEBUG
          for (i = 0; i < numGlyphIdArray; i ++)
            TTF_DEBUG("read_cmap: glyphIdArray[%d]=%d\n", i, glyphIdArray[i]);
 #endif /* DEBUG */

-          // Based on the end code of the segent table, allocate space for the
-          // uncompressed cmap table...
-//          segCount --;			// Last segment is not used (sigh)
+	  if (font->num_cmap == 0 || font->num_cmap > TTF_FONT_MAX_CHAR)
+	  {
+	    errorf(font, "Invalid cmap table with %u characters.", (unsigned)font->num_cmap);
+	    free(segments);
+	    free(glyphIdArray);
+	    return (false);
+	  }

-	  font->num_cmap = segments[segCount - 1].endCode + 1;
-	  font->cmap     = cmapptr = (int *)malloc(font->num_cmap * sizeof(int));
+	  font->cmap = cmapptr = (int *)malloc(font->num_cmap * sizeof(int));

 	  if (!font->cmap)
          {
@ -1356,6 +1404,12 @@ read_cmap(ttf_t *font)			// I - Font

 	  TTF_DEBUG("read_cmap: nGroups=%u\n", nGroups);

+	  if (nGroups > TTF_FONT_MAX_GROUPS)
+	  {
+	    errorf(font, "Invalid cmap table with %u groups.", nGroups);
+	    return (false);
+	  }
+
 	  if ((groups = (_ttf_off_cmap12_t *)calloc(nGroups, sizeof(_ttf_off_cmap12_t))) == NULL)
          {
            errorf(font, "Unable to allocate memory for cmap.");
@ -1369,6 +1423,13 @@ read_cmap(ttf_t *font)			// I - Font
 	    group->startGlyphID  = read_ulong(font);
 	    TTF_DEBUG("read_cmap: [%u] startCharCode=%u, endCharCode=%u, startGlyphID=%u\n", gidx, group->startCharCode, group->endCharCode, group->startGlyphID);

+            if (group->startCharCode > group->endCharCode)
+            {
+	      errorf(font, "Bad cmap table segment %u to %u.", group->startCharCode, group->endCharCode);
+	      free(groups);
+	      return (false);
+            }
+
            if (group->endCharCode >= font->num_cmap)
              font->num_cmap = group->endCharCode + 1;
 	  }
@ -1376,6 +1437,14 @@ read_cmap(ttf_t *font)			// I - Font
 	  // Based on the end code of the segent table, allocate space for the
 	  // uncompressed cmap table...
          TTF_DEBUG("read_cmap: num_cmap=%u\n", (unsigned)font->num_cmap);
+
+	  if (font->num_cmap == 0 || font->num_cmap > TTF_FONT_MAX_CHAR)
+	  {
+	    errorf(font, "Invalid cmap table with %u characters.", (unsigned)font->num_cmap);
+	    free(groups);
+	    return (false);
+	  }
+
 	  font->cmap = cmapptr = (int *)malloc(font->num_cmap * sizeof(int));

 	  if (!font->cmap)
@ -1426,6 +1495,12 @@ read_cmap(ttf_t *font)			// I - Font

 	  TTF_DEBUG("read_cmap: nGroups=%u\n", nGroups);

+	  if (nGroups > TTF_FONT_MAX_GROUPS)
+	  {
+	    errorf(font, "Invalid cmap table with %u groups.", nGroups);
+	    return (false);
+	  }
+
 	  if ((groups = (_ttf_off_cmap13_t *)calloc(nGroups, sizeof(_ttf_off_cmap13_t))) == NULL)
 	  {
 	    errorf(font, "Unable to allocate memory for cmap.");
@ -1439,6 +1514,13 @@ read_cmap(ttf_t *font)			// I - Font
 	    group->glyphID       = read_ulong(font);
 	    TTF_DEBUG("read_cmap: [%u] startCharCode=%u, endCharCode=%u, glyphID=%u\n", gidx, group->startCharCode, group->endCharCode, group->glyphID);

+            if (group->startCharCode > group->endCharCode)
+            {
+	      errorf(font, "Bad cmap table segment %u to %u.", group->startCharCode, group->endCharCode);
+	      free(groups);
+	      return (false);
+            }
+
            if (group->endCharCode >= font->num_cmap)
              font->num_cmap = group->endCharCode + 1;
 	  }
@ -1446,6 +1528,14 @@ read_cmap(ttf_t *font)			// I - Font
 	  // Based on the end code of the segent table, allocate space for the
 	  // uncompressed cmap table...
          TTF_DEBUG("read_cmap: num_cmap=%u\n", (unsigned)font->num_cmap);
+
+	  if (font->num_cmap == 0 || font->num_cmap > TTF_FONT_MAX_CHAR)
+	  {
+	    errorf(font, "Invalid cmap table with %u characters.", (unsigned)font->num_cmap);
+	    free(groups);
+	    return (false);
+	  }
+
 	  font->cmap = cmapptr = (int *)malloc(font->num_cmap * sizeof(int));

 	  if (!font->cmap)
@ -1565,7 +1655,7 @@ read_hmtx(ttf_t           *font,	// I - Font
          _ttf_off_hhea_t *hhea)	// O - hhea table data
 {
  unsigned	length;			// Length of hmtx table
-  int		i;			// Looping var
+  unsigned	i;			// Looping var
  _ttf_metric_t	*widths;		// Glyph metrics array


@ -1644,8 +1734,15 @@ read_names(ttf_t *font)			// I - Font
    return (false);

  font->names.storage_size = length - (unsigned)offset;
+  if (font->names.storage_size > TTF_FONT_MAX_NAMES)
+  {
+    errorf(font, "Name table too large - %u bytes.", (unsigned)font->names.storage_size);
+    return (false);
+  }
+
  if ((font->names.storage = malloc(font->names.storage_size)) == NULL)
    return (false);
+
  memset(font->names.storage, 'A', font->names.storage_size);

  for (i = font->names.num_names, name = font->names.names; i > 0; i --, name ++)
--- a/ttf.h
+++ b/ttf.h
@ -3,7 +3,7 @@
 //
 //     https://github.com/michaelrsweet/ttf
 //
-// Copyright © 2018-2023 by Michael R Sweet.
+// Copyright © 2018-2024 by Michael R Sweet.
 //
 // Licensed under Apache License v2.0.  See the file "LICENSE" for more
 // information.
@ -11,6 +11,7 @@

 #ifndef TTF_H
 #  define TTF_H
+#  include <stddef.h>
 #  include <stdbool.h>
 #  include <sys/types.h>
 #  ifdef __cplusplus
@ -22,12 +23,12 @@ extern "C" {
 // Types...
 //

-typedef struct _ttf_s ttf_t;	//// Font object
+typedef struct _ttf_s ttf_t;	// Font object

 typedef void (*ttf_err_cb_t)(void *data, const char *message);
-				//// Font error callback
+				// Font error callback

-typedef enum ttf_stretch_e	//// Font stretch
+typedef enum ttf_stretch_e	// Font stretch
 {
  TTF_STRETCH_NORMAL,		// normal
  TTF_STRETCH_ULTRA_CONDENSED,	// ultra-condensed
@ -40,20 +41,20 @@ typedef enum ttf_stretch_e	//// Font stretch
  TTF_STRETCH_ULTRA_EXPANDED	// ultra-expanded
 } ttf_stretch_t;

-typedef enum ttf_style_e	//// Font style
+typedef enum ttf_style_e	// Font style
 {
  TTF_STYLE_NORMAL,		// Normal font
  TTF_STYLE_ITALIC,		// Italic font
  TTF_STYLE_OBLIQUE		// Oblique (angled) font
 } ttf_style_t;

-typedef enum ttf_variant_e	//// Font variant
+typedef enum ttf_variant_e	// Font variant
 {
  TTF_VARIANT_NORMAL,		// Normal font
  TTF_VARIANT_SMALL_CAPS	// Font whose lowercase letters are small capitals
 } ttf_variant_t;

-typedef enum ttf_weight_e	//// Font weight
+typedef enum ttf_weight_e	// Font weight
 {
  TTF_WEIGHT_100 = 100,		// Weight 100 (Thin)
  TTF_WEIGHT_200 = 200,		// Weight 200 (Extra/Ultra-Light)
@ -66,7 +67,7 @@ typedef enum ttf_weight_e	//// Font weight
  TTF_WEIGHT_900 = 900		// Weight 900 (Black/Heavy)
 } ttf_weight_t;

-typedef struct ttf_rect_s	//// Bounding rectangle
+typedef struct ttf_rect_s	// Bounding rectangle
 {
  float	left;			// Left offset
  float	top;			// Top offset
Author	SHA1	Message	Date
Michael R Sweet	63cdb13b1b	Fix image name property - forgot to call pdfioStringCreate* APIs for formatted string...	2024-12-12 07:11:25 -05:00
Michael R Sweet	72e55b5bd1	Refactor block formatter to split content into lines and render the lines. Also cache the current font for the whole page.	2024-12-11 20:14:32 -05:00
Michael R Sweet	dc65eb8d2f	Save work on image support.	2024-12-11 15:37:03 -05:00
Michael R Sweet	a39b01ec9c	Add metadata support.	2024-12-10 18:53:51 -05:00
Michael R Sweet	4b29c9a1c2	Add text color and optimize text groups into whole blocks. Add UNICODE_VALUE define to allow toggling between Unicode and ISO-8859-1 modes.	2024-12-10 18:41:23 -05:00
Michael R Sweet	5a4afad566	Save work on markdown formatting example code.	2024-12-10 16:35:12 -05:00
Michael R Sweet	7a45adb7f5	Drop cert.py from cppcheck invocation.	2024-12-10 08:24:47 -05:00
Michael R Sweet	45ac66874c	Add readme for example programs.	2024-12-09 19:28:15 -05:00
Michael R Sweet	eb9dad9b51	Add Code 128 example code.	2024-12-09 19:13:48 -05:00
Michael R Sweet	2ecb9cfb2d	Changelog.	2024-12-08 19:19:13 -05:00
Michael R Sweet	91a467e55c	Merge pull request #81 from vlasovsoft1979/ttf_h_size_t_error Fixed compilation error MSVC 19.16.27039.0 32 bit	2024-12-08 19:18:46 -05:00
Michael R Sweet	d705d7eb5d	Fix reading PDF files whose trailer is missing a newline (Issue #80 )	2024-12-08 19:14:58 -05:00
Sergey Vlasov	55745bcea8	Fixed compilation error MSVC 19.16.27039.0 32 bit	2024-12-08 22:56:25 +03:00
Michael R Sweet	2ea99597cc	Update Windows DLL exports.	2024-10-25 17:57:17 -04:00
Michael R Sweet	a3a3512ed8	Update docos.	2024-10-25 17:50:51 -04:00
Michael R Sweet	afac83530f	Add pdfioDictGetKey and pdfioDictGetNumPairs APIs (Issue #63 ) Add pdfioArrayRemove and pdfioDictClear APIs (Issue #74)	2024-10-25 17:48:19 -04:00
Michael R Sweet	21ac2b52d1	Clean up updated docos (Issue #78 )	2024-10-25 17:32:38 -04:00
Michael R Sweet	21b8e3b06f	Changelog.	2024-10-25 17:17:39 -04:00
Michael R Sweet	91392a931f	Changelog.	2024-10-25 17:17:38 -04:00
Michael R Sweet	1d8bcf4d73	Start v1.4.0.	2024-10-25 17:17:38 -04:00
Michael R Sweet	1e55779906	Merge pull request #78 from uddhavphatak/master Update in documentation	2024-10-25 17:16:46 -04:00
Michael R Sweet	0e45e49ea4	Merge pull request #76 from vlasovsoft1979/master Get name from object	2024-10-25 17:14:59 -04:00
ThePhatak	0ab291a78b	Update pdfio.md	2024-10-21 20:37:25 +05:30
ThePhatak	cac6d4891c	Update pdfio.md	2024-10-21 19:52:34 +05:30
ThePhatak	4f29ad89da	Merge branch 'michaelrsweet:master' into master	2024-10-21 17:09:38 +05:30
Michael R Sweet	9c04d1dc20	Update changelog.	2024-10-15 13:10:06 -04:00
Michael R Sweet	335472023e	Bump version in header.	2024-10-15 13:06:40 -04:00
ThePhatak	25834e07ef	Update pdfio.md addition of lines requeested	2024-10-15 09:38:01 +05:30
ThePhatak	2d2a7126d2	Update pdfio.md updated doc	2024-10-14 13:34:27 +05:30
ThePhatak	df1064ff39	Update pdfio.md	2024-10-14 13:20:44 +05:30
ThePhatak	853fa4fe8f	Update pdfio.md	2024-10-14 13:14:59 +05:30
ThePhatak	2cadfd8a1e	Update pdfio.md	2024-10-14 13:10:57 +05:30
ThePhatak	f5d40a305e	Update pdfio.md	2024-10-14 13:09:13 +05:30
ThePhatak	eb5be57b4a	Update pdfio.md basics of pdf file	2024-10-14 13:06:06 +05:30
ThePhatak	3de47ea63d	Update pdfio.md update documentation	2024-10-14 12:43:40 +05:30
Michael R Sweet	8f2c47cb07	Make sure memory is freed on error conditions.	2024-10-09 15:32:48 -04:00
Michael R Sweet	74dfefdcc1	Update documentation (Issue #77 ) - Explain pdfioObjGetSubtype and pdfioObjGetType values - Provide example code and documentation for accessing common page object values	2024-10-09 15:07:57 -04:00
Sergey Vlasov	ee31096019	PR comment	2024-09-27 20:38:15 +03:00
Sergey Vlasov	121b933307	minor	2024-09-25 18:44:34 +03:00
Sergey Vlasov	f4409146e3	minor	2024-09-25 18:42:38 +03:00
Sergey Vlasov	4312933409	pdfioFileCreateNameObj implemented	2024-09-25 18:40:36 +03:00
Sergey Vlasov	a19949834b	PR comments	2024-09-25 18:06:17 +03:00
Sergey Vlasov	04c4f44324	Get name from simple object. For example, Image ColorSpace is the reference to other object.	2024-09-25 17:04:25 +03:00
Michael R Sweet	206f75403a	Add debug printfs.	2024-08-26 09:19:34 -04:00
Michael R Sweet	7d22477917	Fix opening of certain encrypted PDF files (Issue #62 )	2024-08-21 11:28:39 -04:00
Michael R Sweet	7c3651671b	Add NULL checks in the private debug APIs that testpdfio calls.	2024-08-21 09:22:58 -04:00
Michael R Sweet	6cb661f0f4	Cleanup changelog.	2024-08-21 08:25:11 -04:00
Michael R Sweet	7e01451b18	Merge 0-character font fix from TTF.	2024-08-21 08:22:31 -04:00
Michael R Sweet	138f3955d1	Add --password option to PDFio test program.	2024-08-19 17:12:16 -04:00
Michael R Sweet	82844ad2ce	Merge TTF v1.0.0 source files.	2024-08-19 16:59:00 -04:00
Michael R Sweet	d7cce4dfbc	Merge TTF v1.0.0 source files.	2024-08-19 16:58:38 -04:00
Michael R Sweet	1cec42f399	Bump version to 1.3.2.	2024-08-09 10:55:32 -04:00
Michael R Sweet	f3f70e7877	Merge some TTF sanity check fixes from the TTF project.	2024-08-09 10:54:28 -04:00
Michael R Sweet	90923c3818	Update DLL exports.	2024-08-05 21:55:32 -04:00
Michael R Sweet	986cc512cd	Bump NuGet project versions.	2024-08-05 21:50:18 -04:00
Michael R Sweet	c35ddbec00	Changelog	2024-08-05 21:49:26 -04:00
Michael R Sweet	e4e1c39578	Merge commit from fork Add range checking to TTF loader.	2024-08-05 21:47:48 -04:00
Michael R Sweet	1d4f77cab1	Add examples to documentation (Issue #69 )	2024-08-05 21:44:56 -04:00
Michael R Sweet	b035130cde	Merge pull request #68 from devnibo/master Update documentation	2024-08-05 19:56:40 -04:00
Michael R Sweet	d6d5813b04	Update changelog with CVE number.	2024-08-05 16:34:12 -04:00
Michael R Sweet	6492f210cf	Bump version and changelog.	2024-08-05 10:23:51 -04:00
Michael R Sweet	207062a996	Add size limiting for num_cmap and nGlyphs.	2024-08-05 10:16:00 -04:00
devnibo	7d37abb0df	Update documentation	2024-07-07 16:35:56 +02:00