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Kindle ebook (format 10)
File type: E-book file
Files with kfx extension are ebooks in latest Amazon Kindle format (Format 10).
Found 2 different file type records with the same kfx filename suffix.
File type category:
E-book file
Date updated: December 9, 2024
File extension kfx is best known for ebooks from Amazon Kindle. KFX, also known as format 10, is the successor to the previously used AZW3 format (format 8).
The KFX format provides several enhancements over older Kindle formats, such as improved typography and layout, and supports more advanced content, such as interactive content and pop-up footnotes. This format is designed to make eBooks look more like their physical counterparts, with the same fonts, layouts, and typesetting.
It is primarily intended for the Kindle, but some desktop ebook managers may handle it as well.
Except for Kindle, Calibre is a popular software to read these ebooks.
These files are often DRM protected and thus no conversion is possible.
Programs for viewing kfx files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Apple iOS
Google Android
Amazon Kindle
File type category:
Bitmap image file
Date updated: June 23, 2025
The kfx file extension is associated with the Kofax Group, a some kind of picture image editing software probably developed for Atari 8-bit computers.
The kfx file stores bitmap graphics (56x60, mono).
Use XnView to view content of *.kfx files.
XnView is able to export *.kfx files to other formats.
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