Add file extensions search capability directly into your browser search panel for future use.
Click here to add a new search provider to your browser.
Browsers supporting File-Extensions.org's open search feature: modern browsers like Internet Explorer version 7 and above, Firefox or Google Chrome.
List of common e-book file extensions
Some of the most common digital publications originally introduced along dedicated readers like Kindle. Nowadays can be read on a broad range of devices, including smartphones and tablets.
Common e-book files may change in time as the popularity and significance of some formats can change.
Whole category of e-book files contains now 127 file types. Show all e-book file types.
azw | Files with azw file extension can be found as one of the most common e-book format for Amazon Kindle. These files are typically protected by Digital Right Management. |
azw3 | Files with azw3 extension may be found as e-book used in the latest Amazon Kindle digital reader. A format exclusive to Kindle, similar to EPUB. |
azw4 | Files with azw4 extension are e-books for Amazon Kindle reader. It is one of the default formats used by Amazon. AZW4 is a variation of PDF format. |
cbr | Files with cbr file extension is used for a popular comic e-book format. CBR is basically a rar file that contains several images (usually JPGs) that can opened in comic books viewer as a sequence of screens. |
cbz | A cbz file extension is used for popular comics e-book format based on ZIP compression. It's basically a renamed zip that contains several or more images that can be viewed in comic readers in a slideshow mode. |
epub | File extension epub is used by e-book in Open Publication structure eBook format. Since 2007 EPUB format is regarded as international standard. Generally used for text-centric books or other publications. |
fb2 | Files with fb2 extension can be usually found as e-books, in XML based FictionBook format popular in Russia. |
iba | Files with iba extension can commonly be found as e-books projects created using the iBooks Author platform. |
ibooks | Files with ibooks extension are commonly found as e-books from Apple iBooks app. Default authoring format on Mac. |
lit | Files with lit extension can be mainly found as older e-books in Microsoft Reader eBook format. |
mobi | Files with mobi extension can be typically found as e-books saved in Mobipocket format, now mostly used by Amazon. |
A pdf file extension is mainly used for Adobe Portable document format, commonly referred to as PDF. All programs that create some sort of documents or projects offer the possibility to export their format to PDF format. A free PDF viewer (Adobe Reader) is available for download from Adobe website. |
This is a list of some the most common file types from this category and may change in time as the popularity and significance of some formats can change. Whole category of e-book files contains now 127 file types. Show all e-book files.