Definition
EPUB is a reflowable ebook standard used by most retailers except Amazon's proprietary storefront. It adapts text to screen size and supports navigation, metadata, and embedded fonts.
Example
Authors upload an EPUB to Apple Books and Kobo while uploading a separate Kindle file to Amazon.
Related terms
Common mistakes
- Exporting a fixed-layout PDF and renaming it .epub.
- Skipping validated EPUB checks, leading to broken tables of contents on devices.