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Old 08-08-2018, 08:40 AM   #3
jhowell
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Posts: 7,094
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by Tomifonication View Post
This worked, but when viewing the files, the original source file is 0.90mb and the new KFX file is 0.20mb, which suggests that I'm losing 'something' during the conversion, and my intention is to retain the full integrity/quality of the original file.
Converting from KFX to KFX actually converts from KFX to EPUB, runs that through the calibre conversion pipeline, and then converts back to KFX. Because KFX is not based on HTML, irreversible changes occur during conversion. In addition calibre can make various alterations, such as downsizing images and regenerating the table of contents.

Quote:
Originally Posted by Tomifonication View Post
Is there a way to check that DRM is properly stripped from the KFX file when I've imported it to Calibre?
If DRM removal fails you will be left with a book in KFX-ZIP format instead of KFX format. That is the easiest way to tell if something went wrong.

You can also view the book after import to verify that it is readable. See "Viewing books in KFX format" in the KFX Input documentation for ways to do that.
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