This is the documentation for EPUBCheck, the official conformance checker for EPUB publications. Thanks for visiting these docs!

  • Getting started
    Learn the basics on how to get started with EPUB checking
  • User references
    Read all the details on using EPUBCheck
  • Getting Help
    Check our troubleshooting section or see where to get more help
  • Contributing
    Want to help us make EPUBCheck awesome? See our contribution guides!
  • Developer References
    Read more details on the code base and the project’s organization on GitHub.