Provides support for unzipped EPUB documents.
- The resource should be served with the mime type
<link rel="http://opds-spec.org/acquisition/buy" type="application/opf" href="xxxx.opf"/>
- For zipped EPUBs, see EPUB document type
- The resources should be protected if the edition is not freely available
Testing and Validation
There are many different EPUB validators, such as this one.
See the EPUB Specification for details.