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EPUB Maintenance Home Page

The current EPUB standard is EPUB 3.

This is the archive for the maintenance discussions and issue tracking for EPUB development that led to EPUB 2.0.1 approved in 2010 and EPUB 3 in October 2011.

EPUB is the distribution and interchange format standard for digital publications and documents based on Web Standards. EPUB defines a means of representing, packaging and encoding structured and semantically enhanced Web content — including XHTML, CSS, SVG, images, and other resources — for distribution in a single-file format. EPUB allows publishers to produce and send a single digital publication file through distribution and offers consumers interoperability between software/hardware for unencrypted reflowable digital books and other publications.

The IDPF and DAISY

In 2009 the International Digital Publishing Forum (IDPF) in the USA accepted the offer from the DAISY Consortium, a founding member of the IDPF registered as an Association in Switzerland, to assist in the maintenance of the IDPF Standards.

Charter for EPUB Standards Maintenance Working Group

What is EPUB, .epub, OPS/OCF & OEB?

.epub is the file extension of an XML format for reflowable digital books and publications.

.epub (2.0) is composed of three open standards, the Open Publication Structure (OPS), Open Packaging Format (OPF) and Open Container Format (OCF), produced by the IDPF.

EPUB allows publishers to produce and send a single digital publication file through distribution and offers consumers interoperability between software/hardware for unencrypted reflowable digital books and other publications. The Open eBook Publication Structure or OEB, originally produced in 1999, is the precursor to OPS.