Thread: How to prevent cover being replaced when sending book to device?
View Single Post
Old 04-09-2015, 11:04 AM   #2
theducks
Well trained by Cats
theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.
 
theducks's Avatar
 
Posts: 31,124
Karma: 60406498
Join Date: Aug 2009
Location: The Central Coast of California
Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A
Quote:
Originally Posted by GeoffR View Post
I have an epub with a PNG cover image. When I import the book into Calibre, the cover gets converted to JPG and stored in the Calibre library. Then when I send the book to my device (or save to disk), it seems that Calibre converts its JPG cover into PNG and uses that to replace the original cover in the epub.

This means there is a PNG --> JPG --> PNG conversion taking place for every book with a PNG cover, resulting in a loss of image quality.

How can I prevent Calibre replacing the original PNG cover with the JPG cover kept in the Calibre library?

Alternatively, is there a way to prevent Calibre converting the cover to JPG in the first place?
<Not tried>
Tick No Cover in the device driver settings? I don't know if this option removes an existing cover, or just prevents one from being updated/added
theducks is offline   Reply With Quote