Calibre Updated – Now Makes KF8 Kindle eBooks

This took a few more months than I had hoped, but as of today you can now use calibre, the best open source ebook tool on the market, to make ebooks in Amazon's new Epub-like KF8 ebook format.

Calibre is the leading eBook and eReader management tool, and that's not the usual marketing nonsense. It supports conversion from and to a wide variety of eBook formats. It will also assist you in organizing your eBook library and transferring your eBooks to your eReader (almost all are supported).

Beta support for the new format was started last week, with official support available today. You can make a KF8 file from any of the ebook formats supported by calibre, including the KF8 ebook created by Amazon's own KindleGen. That particular file contains both the KF8 as well as the older Mobi file, and is often rather bloated by the excess content.

With today's update you will also be able to tweak the KF8 output to fine-tune the result of a conversion. Note, though, that this option only produces the KF8 file, and that isn't supported on all of the Kindle device or apps.

But it's still a better option than using KindleGen to produce a KF8 ebook; that will give you a bloated file.


About Nate Hoffelder (10619 Articles)
Nate Hoffelder is the founder and editor of The Digital Reader:"I've been into reading ebooks since forever, but I only got my first ereader in July 2007. Everything quickly spiraled out of control from there. Before I started this blog in January 2010 I covered ebooks, ebook readers, and digital publishing for about 2 years as a part of MobileRead Forums. It's a great community, and being a member is a joy. But I thought I could make something out of how I covered the news for MobileRead, so I started this blog."

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