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Old 07-10-2018, 09:51 AM   #477
jhowell
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Posts: 7,118
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
Quote:
Originally Posted by KindleAZWorKFX View Post
I think, if you understand that Kindleunpack cannot split the kfx format file, which is what amazon is using in their new mobi format (kfx format I think since kindle preview 3 outputs the converted files as mobi format with kfx in them if I understand the app itself right.
The MOBI files produced by Kindle Previewer do not include KFX format. KFX is always separate.

Quote:
Originally Posted by KindleAZWorKFX View Post
question can you split the kfx format like you can split the mobi format
You can't split a KFX file. You might be able to use the EpubSplit plugin to split the source file into smaller pieces and then convert them to KFX individually.

Quote:
Originally Posted by KindleAZWorKFX View Post
is it better to use calibre and change the compress images loseless to enable lossy compression of JPEG images...
In the calibre conversion settings under "Page setup" you can change the "Output profile" to have calibre downscale images. You would have to experiment to find one that reduces the size of the resulting KFX file enough to prevent a crash of your kindle while providing quality that is acceptable to you.

Or you could just not use KFX format for this book. That is my recommendation.

Last edited by jhowell; 07-10-2018 at 04:07 PM. Reason: typo
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