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.AZW3 File Extension

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File TypeAmazon KF8 eBook File

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CategoryeBook Files


This file is saved in a binary format, which requires a specific program to read its contents.


eBook created in the Kindle Format 8 (KF8), Amazon's successor to the .AZW format; supports newer features such as HTML5 and CSS3 support as well as many other formatting capabilities; often includes DRM protection; used as the download format for newer Amazon eBooks.

More Information

KF8 eBooks can be created with KindleGen, a free command line tool provided by Amazon. AZW3 files can be previewed with Kindle Previewer, a Kindle software simulator.

NOTE: KF8 eBooks also use the .MOBI extension. The format downloaded from the Amazon store, either AZW3 or MOBI, depends on the device being used to download and read the eBook.

Program(s) that open .AZW3 files
Microsoft Windows LogoWindows
Amazon Kindle for PC
Kindle Previewer
Mac OS X LogoMac
Amazon Kindle for Mac
Kindle Previewer
Linux LogoLinux
Updated 2/4/2013