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Old 09-18-2018, 01:36 PM   #10
JimmXinu
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Posts: 7,003
Karma: 4604635
Join Date: Dec 2011
Location: Midwest USA
Device: Kobo Clara Colour running KOReader
Examining the contents of the metadata.calibre files, I find that the new one has complete user_metadata and thumbnail for all ebooks from the library.

The old device file has those for some ebooks (newer ones) but they are null / {} for most.

The contents of the user_metadata and thumbnail elements make up ~95% of the 178M metadata.calibre file on the new device. Removing them brings it down to roughly the same size.

Since the old device doesn't have values for these, clearly they aren't necessary for Kindle. Is there a tweak or option somewhere I could use to not send them to the device?

And if not, would you object to having such a tweak or option?
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