Thread: A Calibre library with only kepub
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Old 04-07-2022, 12:03 PM   #7
salamanderjuice
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Quote:
Originally Posted by Katsunami View Post
Wrong approach. The best-known format right now is EPUB2; you can basically convert TO it from everything, and FROM it into everything.

Therefore having every book as EPUB2 (base format) + the format you need at the moment is the best approach. My entire library is EPUB2. When I put stuff onto my (old) Kindle from 2012 I convert those books to AZW3, for Kobo I have then auto-converted to KEPUB by the KoboTouchExtended driver, and if I'd ever get a newer Kindle, those books would either convert to AZW3 or KFX.

At some point I remove all the non-EPUB versions from the library, but I never remove the EPUB2 version.

(Same with Music: I have everything in FLAC, but the music for use on my phone is converted to Opus. If I'd use a device somewhere that can only do MP3, I convert the FLAC to that. And if FLAC, as a lossless format, falls out of fashion down the line, I can convert from FLAC into the new de facto default lossless format.)
EPUB 2 is absolutely NOT the best format. EPUB 3 is a thing and it does offer benefits over 2 even for English books. If you have an Epub 3 and it works on your devices just leave it like that. It's best to just keep books in the original format that you have that supports the most features and works with your tools.
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