Introduction

pdfio is a simple C library for reading and writing PDF files. The primary goals of pdfio are:

Read any PDF file with or without encryption or linearization
Write PDF files without encryption or linearization
Extract or embed useful metadata (author, creator, page information, etc.)
"Filter" PDF files, for example to extract a range of pages or to embed fonts that are missing from a PDF
Provide access to objects used for each page

pdfio is not concerned with rendering or viewing a PDF file, although a PDF RIP or viewer could be written using it.