January 17, 2022

Digital Publishing: IDPF Members Unanimously (72-0) Approve EPUB 3.1 as Recommended Specification

From the International Digital Publishing Forum (IDPF):

The IDPF Membership has unanimously approved EPUB 3.1 as a Recommended Specification, by a vote of 72 YES to zero NO votes. 73 members voted (including one abstention) representing 54% of the members in good standing. significantly above the 25% quorum requirement.


The EPUB 3.1 project began in October of 2015, with a goal of simplifying the specification and better aligning with the Open Web Platform. EPUB 3.1 is a significant update but includes no significant new features. it addresses many errata and other minor issues, reflects updates to HTML5 and other Web specifications since the finalization of EPUB 3.0.1 in June, 2014. and adds specificity to accessibility requirements. Additonally, the EPUB specification has been significantly reorganized, with  general conformance requirements now a separate document that also serves as the main “entry point” to the EPUB specification.


The EPUB 3.1 revision also introduces a new accessibility specification and a non-normative accessibility techniques document.

Learn More, Read the Complete Announcement

About Gary Price

Gary Price (gprice@mediasourceinc.com) is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at Ask.com, and is currently a contributing editor at Search Engine Land.