EPUB file format description

Many people share .epub files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .epub file can be edited, converted or printed with. On this page, we try to provide assistance for handling .epub files.

1 filename extension(s) found in our database.

Naturally, other applications may also use the .epub file extension. Even harmful programs can create .epub files. Be especially cautious with .epub files coming from an unknown source!

Can't open a .epub file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:

example.epub

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

• Open Control Panel > Control Panel Home > Default Programs > Set Associations.
• Select a file type in the list and click Change Program.

The .epub file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

epb, spub, epu, pub

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.epb

EP Budgeting Data File

.epu

EPSi Firmware Image

.pub

Corel Ventura Publisher Publication

.pub

Microsoft Publisher Document

.spub

BeLight Disc Cover Data

.epu

Open eBook Document

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If you have useful information about the .epub file format, then write to us!