Files with kfx extension are ebooks in latest Amazon Kindle format (Format 10).

There is one other file type using
the KFX file extension!

kfx icon.kfx - Kofax Group 4 bitmap graphics

Detailed description

Software that open kfx file

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KFX file extension - Kindle ebook (format 10)

What is kfx file? How to open kfx files?

File type specification:

E-book file type icon E-book file type

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.

Updated: March 24, 2024

The default software associated to open kfx file:

Amazon Kindle icon

Amazon.com, Inc. logoAmazon Kindle  Amazon Kindle software

Company or developer:
Amazon.com, Inc.

Kindle is an portable e-book reading device from Amazon. It is used to download, browse, and read e-books, newspapers, magazines. Kinde supports mainly AZW and MOBI files, but you can convert other formats to be readable in Kindle, including DOC, HTML, PNG, JPG, GIF, BMP or ZIP.

Help how to open:

Except for Kindle, Calibre is a popular software to read these ebooks.

How to convert:

These files are often DRM protected and thus no conversion is possible.

List of recommended software applications associated to the .kfx file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open kfx file, edit kfx file, convert kfx file, view kfx file, play kfx file etc. (if exist software for corresponding action in File-Extensions.org's database).

kfx file viewer - programs that view kfx file - Kindle ebook (format 10)

Programs supporting the exension kfx on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for view kfx file action.

Microsoft Windows:

Apple macOS / Mac OS X:

Linux/Unix:

Blackberry mobile phones and devices:

Amazon Kindle:

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