epubcheck
https://github.com/w3c/epubcheck
Java
The conformance checker for EPUB publications
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- Issues
- Accept multiple EPUBs as input
- missing package namespace generates repeated errors on dc: elements
- CFI Validation
- Report XML Processing Instructions looking like XML declarations (typos) as USAGE?
- Support for ZIP64 archives?
- OPF Spine doesn't matched with NCX entries
- java.lang.ArrayIndexOutOfBoundsException: 4096
- Make sure Schematron checks normalize whitespace when needed
- In ncx, TOC section scope not included in the parent - no warning or error
- i18n for Schematron and Jing/RNG messages
- Docs
- Java not yet supported