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EPUB is a free and open ebook standard utilizing XHTML content and XML manifest files packaged in a zip file. See http://www.hxa.name/articles/content/epub-guide_hxa7241_2007.html for a .epub construction guide.

License information

As human-readable EPUB content is XHTML, standard CC REL (RDFa) machine-readable annotation of human visible license notice is best practice.

It is also possible to add dc:rights to the manifest file. If done this must agree with the annotated human visible notice above.


  • Examples of books in EPUB format featuring best practice license notice and annotation.
  • EPUB authoring and publishing software that facilitates addition of best practice license notice and annotation.
  • License-aware EPUB search and discovery mechanisms. Does license-aware Google and Yahoo search work with EPUB format content?