Quote:
Originally Posted by jhowell
The current version of the plugin combines the tiles into a single JPEG image with approximately the same quality as the original tiles. That can lead to some slight degradation and artifacts. The next release of the plugin will instead produce a PNG image that will capture the content of the original tiles losslessly.
Another possible source of image changes is calibre itself. If you convert using the calibre conversion routine instead of the plugin CLI there can be rescaling of large images unless you set the Output Profile to Tablet.
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That appears to be what I'm seeing in relation to the tiles. The upcoming PNG option in the next version is fantastic news! I hope you'll keep a JPEG option for users who don't mind it, but I know I'll definitely use PNG as my preference for a lossless backup. I use the CLI exclusively for conversion to avoid any calibre issues.
If you happen to need a tester for the new version, I wouldn't mind helping out and testing the PNG functionality. In the meantime, I look forward to the next version of the plugin! Thank you again!