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What are EPUB files and how to open them

Are you having problems opening an EPUB file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is an EPUB file?

An .EPUB file is an Open Publication Structure eBook file.

The .epub file extension is often given to files that have been created by applications that use the Open eBook XML file format. These files are composed of three open standards including the Open Packing Format, the Open Publication Structure, and the Open Container Format.

The EPUB file format allows eBook publishers to produce unencrypted reflowable digital eBooks. The EPUB files consist of a ZIP file that contains the contents of the eBook and an XML file that describes the contents of the ZIP file itself.

In order to read an eBook that has been published in the EPUB file format, you must have a compatible eBook reader.

How to open EPUB files

We have identified two EPUB openers that are compatible with this specific type of EPUB file.

Programs that open Open Publication Structure eBook files

Last updated: March 17, 2023

Various apps that use files with this extension

These apps are known to open certain types of EPUB files. Remember, different programs may use EPUB files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Icecream Ebook ReaderIcecream Ebook ReaderVerified
Reader for PCReader for PCUser submitted
mekia eBook Readermekia eBook ReaderUser submitted
iTunesiTunesUser submitted
Sony Reader LibrarySony Reader LibraryUser submitted
STDU ViewerSTDU ViewerUser submitted
E-book viewerE-book viewerUser submitted
Adobe AcrobatAdobe AcrobatUser submitted
Barnes & Noble Desktop ReaderBarnes & Noble Desktop ReaderUser submitted
Edit E-bookEdit E-bookUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about EPUB file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.