Quote:
Originally Posted by PatNY
Charles, I just sent you the actual jpeg for the cover to your email address.
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OK, I see what is happening. As I mentioned, calibre uses a .7 compression quality index when creating the thumbnails. For this cover, it produces a size of 7,000 bytes. If I change the quality to .9 then the size goes up to 12,000 and the compression artifacts are largely gone. See the attached cover.
I will add a tweak (or something) to calibre to let you set the compression quality. The question is should this be by-device or calibre wide?