Useful links for the future of EPUB: Specifications, repositories and drafts for 3.0.1 to 3.2 on May 10, 2018 ePub EPUB2 EPUB3 EPUB3.0.1 EPUB3.1 EPUB3.2 IDPF W3C +
EPUB2 to EPUB3: Lessons Learnt in Conversion on March 23, 2014 DTD EPUB2 EPUB3 HTML5 nav opf Sigil XHTML +