: Used to control the visual presentation and layout of the text. Methods for Creating EPUBs 1. Word Processor Export (Beginner)

An EPUB is essentially a renamed .zip archive containing a specific collection of web-based files:

: The actual chapters and pages, typically written in XHTML.

: A single-line file ( application/epub+zip ) that must be the first, uncompressed file in the archive.

EPUB is the industry-standard, open-source format used for most modern ebooks. While simple text documents can be converted easily, professional-grade EPUBs require specific structural elements to ensure readability across all devices. Core Structure of an EPUB File