Quote:
Originally Posted by davidfor
The metadata that is extracted is:
- Title
- Author
- Synopsis
- Language
- File size
- Format
- ISBN (actually takes the first identifier)
As well as that, the library can show:
- Publisher
- Published date
- Series name and number
Kobo populate these for purchased books from their server, but they have to be populated by other methods for sideloaded books. And I have no idea why Kobo do not extract the publisher and date as it is standard metadata. The cover is not extracted and is generated the first time it is needed.
I have no idea how the above compares to what is on the Kindle.
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Kindles just show title/author/cover. TBH I am not sure what I would want to look at the filesize/format/language/ISBN for, sounds like the Kobo is spending too much time extracting and indexing unusual metadata.
filesize is accessible via file browser hacks, if I cared, which I don't, because filesize is not a criteria that affects my reading.
format -- it is a Kindle book.

AZW3 can be pretty bad quality and MOBI can be good, so it doesn't even tell me what quality the book is.
language -- I read only English books, but if I read other languages the title would be a giveaway. The Kindle only uses language for choosing a dictionary, and that is based on XHTML lang attributes anyway, just like all the other book
content.
ISBN would be a lot more useful if there was any reason to know one outside of cataloging time.
Synopsis -- Amazon expects us to look in the Kindle store for that.

I might use it if it was offered, but I am not all that fussed really, it is not *my* priority. And many people across various devices/apps have been using calibre metadata jackets for that.
Series I do rather want. But embedding it in the title is a fair substitute.
Covers are extracted from the book after it is added, I think. I usually sideload via calibre which creates the cover thumbnails anyway.