This document provides delivery information for all accepted media and files for Apple Books. It describes the basics of EPUB 3 creation, and provides guidelines for various EPUB styles and features.
In addition to this guide, an EPUB example is available on the Support page for Apple Books.
Note: Apple Books Asset Guide 5.3 and later cover EPUB 3 files only. For EPUB 2 information, refer to the Internet Archive EPUB 2 page.