Thread: AZW3 thumbnail very pixelated/grainy/low quality
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Old 09-29-2016, 11:17 AM   #3
jhowell
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Posts: 7,105
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Join Date: Nov 2011
Location: Charlottesville, VA
Device: Kindles
It is hard to be helpful with the little information you have given. Where do your AZW3's come from? Are they (and their thumbnails) delivered directly from Amazon or are you sideloading? If sideloading though calibre or manually? Are the files downloaded from Amazon, produced by KindleGen, or from calibre conversion?

The ExtractCoverThumbs program may be of use to you. It can regenerate Kindle thumbnails from MOBI and AZW3 files.
Last edited by jhowell; 09-29-2016 at 11:20 AM.
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