Thread: Improving images in ebooks
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Old 08-19-2021, 07:06 AM   #3
Quoth
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Posts: 14,277
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Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper
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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