EPUB File Extension

EPUB file icon
Open EBook Format
  • Developer
    IDPF
  • Popularity
    3.8 (25 votes)

What is EPUB file?

Files with the EPUB extension contain electronic publications - Electronic PUBlication, compressed with ZIP compression method, stored in an open format based on XML. Within the file, there is also some metadata on a given publication. It also enables to search through the text for specifics.

Such format may include:

  • Content of a book, providing possibility to change the font size, and the option to display it with no division into pages.
  • Raster or vector graphic.
  • Copyrights - DRM,
  • CSS stylesheets.

History of EPUB format

EPUB files have substituted the previous Open eBook format, introduced by the International Digital Publishing Forum – IDPF, in the year 2007. Currently, along with the MOBI and PDF formats, EPUB is the most popular format used for distributing electronic books or other publications for reading devices, although they can be opened also on mobile devices and computers equipped with proper software. In the EPUB 3.1 version, also audio and video data can be stored and it supports interactivity.

Conversion of a EPUB file

When you install one of the applications from the list of programs that you found here, you should be able to open or edit the file with the EPUB extension without any issue. However, if you still have problems with this, you may use the option of EPUB file conversion to a different format.

File Conversions from EPUB extension to a different format
File conversions from other format to EPUB file

We hope we helped you solve the problem with the EPUB file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the EPUB file (apart from the lack of the proper application installed).

First - the EPUB file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the EPUB file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the EPUB file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the EPUB file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the EPUB file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on EPUB file.

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