diff --git a/.gitignore b/.gitignore
index e69d4dc..222bce1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 *.o
 *.so.1
 /.vs
+/doc/pdfio.epub
 /packages
 /pdfio.xcodeproj/xcshareddata
 /testpdfio
diff --git a/Makefile b/Makefile
index cbec156..467b55a 100644
--- a/Makefile
+++ b/Makefile
@@ -173,6 +173,7 @@ DOCFLAGS	=	\
 .PHONY: doc
 doc:
 	codedoc $(DOCFLAGS) --title "PDFio Programming Manual v$(VERSION)" $(PUBHEADERS) $(PUBOBJS:.o=.c) --body doc/pdfio.md --coverimage doc/pdfio-512.png pdfio.xml >doc/pdfio.html
+	codedoc $(DOCFLAGS) --title "PDFio Programming Manual v$(VERSION)" --body doc/pdfio.md --coverimage doc/pdfio-epub.png pdfio.xml --epub doc/pdfio.epub
 	codedoc $(DOCFLAGS) --title "pdf read/write library" --man pdfio --section 3 --body doc/pdfio.md pdfio.xml >doc/pdfio.3
 	rm -f pdfio.xml
 
diff --git a/doc/pdfio-epub.png b/doc/pdfio-epub.png
new file mode 100644
index 0000000..e5a8997
Binary files /dev/null and b/doc/pdfio-epub.png differ