Term:epub [electronic publication]

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epub is a an open e-book file format standard.

“Epub” format might be compared to “.pdf” format, in that it is designed to contain the contents of a book or document intended to be read or viewed. Epub format is optimized specifically for ebook reading applications or devices.

Most all ebook reading devices either support epub format, or use it as their primary ebook distribution and display format. The notable exception is the Amazon Kindle, which does not support epub format.

There is an assortment of applications available for most any other platform that can be used to read books distributed in epub format.

Further reading: EPUB on Wikipedia.

epub (Wikipedia)
Electronic Publication (EPUB)
EPUB logo.svg
Filename extension
Internet media type
Magic numberPK\x03\x04 (Zip)
Developed byInternational Digital Publishing Forum (IDPF)
Initial releaseSeptember 2007; 13 years ago (2007 -09)
Latest release
(May 15, 2019; 2 years ago (2019-05-15))
Type of formate-book file format
Contained byOEBPS Container Format (OCF; Zip)
Extended fromOpen eBook, XHTML, CSS, DTBook
StandardISO/IEC TS 30135
Open format?Yes

EPUB is an e-book file format that uses the ".epub" file extension. The term is short for electronic publication and is sometimes styled 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 standard.

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. The EPUB format is implemented as an 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 (as opposed to PDF) e-book format; that is, it is supported by almost all hardware readers, except for Kindle.

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