Quote:
Originally Posted by JSWolf
I think it's due to incorrect settings in calibre.
To fix this, go to Preferences > Common options > Page setup. Change Output profile to Tablet and Input profile to Default profile.
If you have these options set wrong, hi-res images will be reduced in resolution. A setting of Tablet does not change images at all.
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Ok one interesting thing I found. I'm currently using version 6.19.1 installed in Windows 11 pc. I also have a backup USB with an older version of Calibre portable release 4.23.0. When I used it (portable version 4.23.0) the tablet setting it did produce a high quality MOBI file from the epub. So maybe there is a bug in this current version. Maybe kovid can take a look when he has time.