Skip to content

Standards Working Group Update: Preparing for EPUB 3.1

2014 December 30
by Amaya Webster

Submitted by George Kerscher

The DIAGRAM Standards Working Group continues to meet jointly with the TIES (Transition to Inclusive EPUB 3 eco System) Working Group on a biweekly basis, every other Tuesday, preparing for the upcoming EPUB 3.1 revision, scheduled to be completed in 2015. The next joint DIAGRAM and TIES working group meeting will take place January 6, 2015 at 15:00 UTC.

From the accessibility perspective, we have been working on requirements for the next revision. The items under development are:

  • updating the image description techniques; this has a dependency on W3C’s
    decisions on the proposed ‘longdesc’ attribute and work currently underway on ARIA 1.1 including the ‘aria-describedat’ attribute
  • further braille enhancements, with dependencies on CSS development, and the
    standardization of braille code identifications
  • enhancements to media overlays, which may include text and video
    synchronization for sign language. Also, metadata extension to identify the
    type of media overlay, e.g. text and audio, text and sign, text and video or
    audio only
  • further development and promotion of audio only EPUB (with navigation) and
    addition of modern audio codex
  • development of samples that demonstrate techniques used for creating accessible publications in EPUB 3.1 format

Readium will be holding meetings at the New York Public Library on January 13 and 14, 2015. Members of Readium Foundation gather on January 13, 2015 10:00 am -1:00 pm (U.S. ET) at the New York Public Library and via Web conferencing. NYPL Labs and Readium Foundation bring “Volume 2” of their Open Book Hack Day to the New York Public Library on Wednesday, January 14.

The EDUPUB Community will meet in Phoenix on February 26 and 27, 2015. For further information, see and for registration details visit

Testing of reading systems continues at:

Finally, the draft of the white paper Advancing Portable Documents for the Open Web Platform: EPUB-WEB is now publicly available for review. Comments and suggestions are warmly welcome; it is a good read!

Please contact George Kerscher at <kerscher [at] montana [dot] com> if you would like more information about the Standards Working Group. All meeting notes continue to be posted on the DIAGRAM Standards WG wiki.

Leave a Reply