Thread: Embedding metadata into epub files
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Old 06-22-2021, 11:49 PM   #35
davidfor
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Quote:
Originally Posted by steve1977 View Post
Not fully. When I convert an epub from epub2 to epub3 (with Calibre), the embedded metadata is changed, but the opf file in the book folder is not changed.
The OPF file in the folder has no real connection to the OPF in the epub. It is created by calibre as a record of the metadata. It exists even if you only had an AZW3 or MOBI. Or no format at all.

Stop worrying about. Calibre maintains it as it is a file that calibre uses. If you have another use for it, then you need to accept that calibre will update it when calibre needs to update it. If you remove it, calibre will recreate it. If you change it, calibre will rewrite it. Neither of those might happen immediately, but, they will happen.
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