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EPUB ○˒｜Definition｜1st｜20260905235717-00-⌔
EPUB
EPUB is an e-book file format that uses the “.epub” file extension. The term is short for electronic publication and is sometimes stylized as ePUB. EPUB is supported by many e-readers, and compatible software is available for most smartphones, tablets, and computers. EPUB is a technical standard published by the International Digital Publishing Forum (IDPF). It became an official standard of the IDPF in September 2007, superseding the older Open eBook (OEB) standard.1
The Book Industry Study Group endorses EPUB 3 as the format of choice for packaging content and has stated that the global book publishing industry should rally around a single standard.2 Technically, a file in the EPUB format is a ZIP archive file consisting of XHTML files carrying the content, along with images and other supporting files. EPUB is the most widely supported vendor-independent XML -based e-book format; it is supported by almost all hardware readers and many software readers and mobile apps.3
Printed 2026-09-05.
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Link to original Footnotes
“OPS 2.0 Elevated to Official IDPF Standard”. IDPF. eBooklyn. Oct 15, 2007. ↩
“Endorsement of EPUB 3”. BISG. Book Industry Study Group. 2012-08-06. Archived from the original on 2016-04-17. Retrieved 2020-05-05. ↩
“The Different Ebook Formats Explained: EPUB, MOBI, AZW, IBA, and More”. 27 July 2018. ↩
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