File extension .EPUB
Full Name | Developer | Category |
---|---|---|
Open Publication Structure EBook Format | IDPF | eBook Files |
The file extension .EPUB is considered an open eBook file, which is a free and open source format specification for eBooks and publications. This standard was created by the IDPF (International Digital Publishing Forum) for digital publications and documents. These documents are commonly used to publish electronic magazines, books, newspapers, comics, and any other type of digital publication. In addition, they can also be used to represent learning objects that are delivered electronically.
Structure and Format of EPUB Files
EPUB files take the form of an additional XML document structure made up of XHTML and other XML file types referred to as OPS (Open Publication Structure). The book’s text and other elements are represented within this structure while content validation can be achieved through the use of the OPF (Open Package Format) utilized within the document. This adds content metadata so that it is easier for users to identify a certain ebook file.
Compatibility with EPUB Formats
With the development of the EPUB 3 version, readers can more easily convert said files into any other format, such as .PDF, .MOBI, .DOCX, and others. The compatibility of these files with a vast array of devices such as smartphones, computers, tablets, etc. has been expanding rapidly. This has allowed publishers and authors to use these file standards for the distribution of their works while making it easier for users to access them.
Programs for WINDOWS system
Programs for MAC system
Programs for LINUX system
Programs for Android system
Programs for IOS system
After installing the required software, the operating system will usually automatically associate an unknown file type (in this case .EPUB) with the new application. If this does not happen, we can help the system a bit by selecting the software for it, which it should always use to open files with the .EPUB extension.
When choosing the software we can select the system to use this software every time.
Remember!
Using it for the first time it is good to check whether the .EPUB file opened in the application can be read by us and opens in a way that allows us to use it. If everything is in order, select this option the next time you open a file with the .EPUB extension. However, if the file has not opened correctly, we have to look for a different software, with which we can open files with the .EPUB extension. Select a different software from our list and install it on your computer. After the software is installed, repeat inspection openings of a .EPUB file. Sometimes you have to repeat the operation several times.
Other instructions
If none of the programs listed by us to work with the .EPUB file has not meet your expectations, you can try searching other websites. But remember to avoid downloading programs "that can open any file". These applications not only have very limited functionality, but may also expose you to expense tens of dollars when purchasing a license.
In the vast majority of cases you will find the program dedicated to support the .EPUB file, or any other file format. In addition, there is a chance that it will be a free program, and its functionality (concerning the .EPUB file) will be extended to the maximum.
It is also good to check
- if the .EPUB file has no errors
- or if it has been copied (or downloaded by the browser) thoroughly
Author’s guidelines

Mr B. Adam
Author of the guidelines / Founder of FileExtension.info
New technologies enthusiast, helping to solve problems with the files.
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