Having problems opening an EPUB file?

We have programs that can open or convert your EPUB files.

Opening EPUB files

Did your computer fail to open an EPUB file? We explain what EPUB files are and recommend software that we know can open or convert your EPUB files.

What is an EPUB 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.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension EPUB

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the EPUB file format or software that uses files with the EPUB suffix, please do get in touch - we would love hearing from you.