Thread: Improving images in ebooks
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Old 08-19-2021, 07:06 AM   #3
Quoth
the rook, bossing Never.
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Posts: 11,173
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Join Date: Jun 2017
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Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper11
Or in The GIMP:
Import at desired resolution
Images -> Mode - > Grey scale
Go to menu Colours -> Levels and drag ^ for black level, gamma and white level. You'll see image change.
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