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Old 09-30-2011, 04:21 PM   #3
DoctorOhh
US Navy, Retired
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Posts: 9,897
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Join Date: Feb 2009
Location: North Carolina
Device: Icarus Illumina XL HD, Kindle PaperWhite SE 11th Gen
Quote:
Originally Posted by ilovejedd View Post
Is there a tweak somewhere to force Calibre to use a specified cover image as-is without converting to JPG? I generated some very simple PNG covers between 5~10KB in size and the JPG Calibre makes are usually 20~40KB and have slight artifacts along the text edges.
I don't know of a tweak to use png vice jpg.

As a workaround you might want to use the tweak epub feature to explode the epub. Replace the the cover.jpg with cover.png. Use a editor like Notepad++ to edit the content.opf and the titlepage.xhtml files to reflect the png vice jpg. Then rebuild the file.

Good Luck.
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