Home : File Types : EPUB File

.EPUB File Extension

File TypeOpen eBook File

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CategoryeBook Files


This file is saved in a zipped format. You can view the contents by unzipping it with a file decompression program.

What is a EPUB file?

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.

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Programs that open EPUB files
Adobe Digital Editions
Mobipocket Reader Desktop
Geometer Plus FBReader
Comic Book Reader
Adobe InDesign CC 2015
Icecream Ebook Reader
Apple Pages
Adobe Digital Editions
Geometer Plus FBReader
Adobe InDesign CC 2015
Apple iBooks
Sixty Four Kitabu
Geometer Plus FBReader
KDE Okular
Apple iBooks
Apple Pages
File Viewer for Android
Sony Reader
Geometer Plus FBReader
Google Play Books
Updated 7/6/2016

.EPUB Extension Information

This page contains information about the file extension EPUB and its known file associations. Our goal is to help you understand what a *.epub file is and how to open it.

The Open eBook file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and do not publish any information we have not verified.

If you would like to suggest any additions or updates to this page, please let us know.