This is the latest production-ready release of EPUBCheck. It can be used to check conformance to the EPUB 3.3 specification.

This release was made by the DAISY Consortium for W3C. Many thanks to everyone who contributed and reported issues!

EPUBCheck is also available in the Maven Central Repository as org.w3c:epubcheck.

Features

• add 'application/x-font-ttf' to core media types (66e5254), closes w3c/epub-specs#667 w3c/epub-specs#2726 #1612
• allow its-* attributes (ITS) in HTML (7ca1084), closes w3c/epub-specs#2732 #1616
• report unusual epub: namespace (USAGE) (#1624) (cf16167), closes #1601 #1601
• set severity of .epub extension message to USAGE (d90b8f2)
• update the structural semantics vocabulary (292e41f), closes #1617
• update to latest schemas from the Nu HTML Checker (812dd21)

Bug Fixes

• allow CSS has:(<selector>) syntax (6509da8), closes #1605 #1618
• allow decomposed URL encoding of composite characters (fea03be), closes #1606
• css: improve support for 'q' and 'ch' units (315d862)
• do not pollute stdout JSON with messages (1440418), closes #1603
• do not throw an exception for duplicate encrypted data (60a6d6c), closes #1607
• improve palpable content definition (6a1c11b)
• relativize path reported in OPF-002 (0db811c)
• remove 'image/svg+xml' from font core media types (2094698), closes #1615

Dependencies updates

• bump com.google.guava:guava from 32.0.0-jre to 33.4.8-jre (4979051e)
• bump org.apache.commons:commons-compress from 1.21 to 1.27 (4818dcd4)
• bump com.ibm.icu:icu4j from 72.1 to 77.1 (2d9271a6)