04-29-2024, 08:46 AM
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#16
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Connoisseur
Posts: 50
Karma: 10
Join Date: Apr 2021
Location: Spain
Device: Kobo Libra 2
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This works for me: - Open the ePub with Sigil and extract the cover jpg.
- Open the jpg with Gimp image editor and then:
File->Export As..., “JPEG Image”, [Export].
- Now in the “Export Image as JPEG” tab:
- Adjust cursor “Quality” to reduce the output file size.
- Uncheck all options except “Save color prpofile”, “Optimize” and “Progressive” (under Advanced Options), especially uncheck the option:
[ ] Use quality settings from original image
- [Export]
- In Sigil, reload the jpg back into the ePub.
- If it still does not work, in Sigil open content.opf, look for the tag
<dc:identifier id=“BookId” etc...
and delete it.
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