eBooks file extensions
Digital book formats used by e-readers, publishing tools, and reading apps.
Total extensions in this category: 6
Extensions in eBooks
Explore the most searched extensions in this category.
- .azw
Amazon Kindle eBook (AZW)
.azw is an Amazon Kindle eBook format used by Kindle devices and Kindle apps. It is part of the Kindle format family and is closely related to MOBI-based Kindle books.
- .mobi
Mobipocket eBook
.mobi is a Mobipocket eBook file used for distributing and reading ebooks, closely associated with Kindle-era ebook workflows. It can be opened in common ebook apps such as Kindle apps and Calibre.
- .kfx
Amazon Kindle KFX (Kindle Format 10) eBook
.kfx is a Kindle eBook format (Kindle Format 10) used for Kindle Store content and modern Kindle rendering features. It is typically opened on Kindle devices/apps, and is also used in Kindle publishing/preview workflows.
- .azw3
AZW3 ebook
.AZW3 files are eBook files primarily used by Amazon Kindle devices and apps, offering advanced formatting options.
- .fb2
FictionBook 2.0 (FB2) eBook
.fb2 is a FictionBook 2.0 eBook file stored as XML, commonly used for fiction and rich book metadata. You can read it in eBook apps that support FB2 or convert it to EPUB/MOBI using desktop tools like Calibre.
- .epub
EPUB ebook
.EPUB files are widely used for digital books and can be opened with various e-reader apps across different platforms.