 | |
| Filename extension |
.epub |
|---|---|
| Internet media type |
application/epub+zip |
| Magic number | PK\x03\x04 (Zip) |
| Developed by | International Digital Publishing Forum (IDPF) |
| Initial release | September 2007 |
| Latest release | 3.3 May 25, 2023[1] |
| Type of format | e-book file format |
| Contained by | OEBPS Container Format (OCF; Zip) |
| Extended from | Open eBook, XHTML, CSS, DTBook |
| Standard | ISO/IEC TS 30135 |
| Open format? | Yes |
| Website | w3.org/epub3 |
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.[2]
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.[3] 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.[4]
- ^ "EPUB 3.3 specification". IDPF. Retrieved May 27, 2023.
- ^ "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.