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.EPUB File Extension

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File TypeOpen eBook File

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CategoryeBook Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.


Digital ebook saved in the EPUB format, an open XML-based format for digital books and publications; provides a standard digital publication format for publishers and consumers; can be viewed with supporting software programs and hardware devices, such as the Sony Reader and Barnes & Noble Nook.

More Information

The EPUB format is based on three open standards, which are all maintained by the International Digital Publishing Forum (IDPF).

  1. The Open Publication Structure (OPS), which defines the content markup
  2. The Open Packaging Format (OPF), which describes the ebook structure
  3. The Open Container Format (OCF), which packages all the ebook files together in a compressed format

NOTE: Many commercial ebooks include digital rights management (DRM) protection. These files can only be opened on devices that have been authorized to view the ebook.

Program(s) that open .EPUB files
Microsoft Windows LogoWindows
Adobe Digital Editions
Mobipocket Reader Desktop
Geometer Plus FBReader
Comic Book Reader
Adobe InDesign CC 2015
Icecream Ebook Reader
Mac OS X LogoMac
Apple Pages
Adobe Digital Editions
Geometer Plus FBReader
Adobe InDesign CC 2015
Apple iBooks
Sixty Four Kitabu
Linux LogoLinux
Geometer Plus FBReader
KDE Okular
iOS LogoiOS
Apple iBooks
Apple Pages
Android LogoAndroid
File Viewer for Android
Sony Reader
Geometer Plus FBReader
Google Play Books
Updated 10/20/2015