What’s changed?
We’ve added two new media types for fonts and reorganized and clarified the spec documents themselves. We now recommended that all EPUB files conform to the EPUB Accessibility Specification. We’ve also eased restrictions on the values used in epub:type attributes.
It’s now possible to include things like data sets with an EPUB. We’ve deprecated some EPUB features that were not widely implemented and are not part of the larger web platform. Examples include epub:switch and epub:trigger. To help people navigate the update, we’ve written a changes document that describes all the changes from EPUB 3.0.1 to EPUB 3.2.
It’s important to know: Most content creators will not have to change anything. Your EPUBs are likely already valid EPUB 3.2 files.
What about validation?
Thanks to a fundraising effort spearheaded by Rachel Comerford, Tvziya Siegman, and Luc Audrain, EPUBCheck 4.2.1 fully supports EPUB 3.2. You can download the latest EPUB Check here.
Note that EPUBCheck still needs donations from the community! This is tool that every creator or recipient of EPUB files relies on to validate files. Support is a needed to continue to update the tool and keep it relevant for the digital reading community.
For more information…
If you’re interested in the future of EPUB, please join the EPUB 3 Community Group. The group is open to anyone interested in how EPUB works and can be maintained.
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