

To be noted that you'll often or not encounter "problems" while writting metadata (mostly into pdf, but it happens in epub, and some drm'ed files too), with calibre telling you it's not a proper file and it can't update it. There is a button for "polish the books" to be added on your toolbar (it was, like the toggle for filter/highlight in search, by default in previous versions, but some "genius" decided to remove it from latest versions, for some idiotic reason(s)). That operation is done "automatically" when you either export the books (to a device or save to disk), or polish the books (works only for epub/azw3 formats). It's a Button you need to add to your toolbar in the latest version(s) from memory, it requires a plugin if it's for ComicBook Files like CBZ. then IF you want to update the metadata for your file(s), you'll have to manually tell calibre to "embed metadata into files".

but Calibre devs aren't at one grossly hypocrit and illogical way of working for their piece of crap software :D) then when you edit metadata it saves it in the Calibre DB not touching the file(s) (even if you can't update metadata when the file(s) are open into anything else, with shouldn't happen since it's supposedly doesn't touch the file(s).

first, it copies the books you add into Calibre libary (with a setting to delete the "source" file once added, otherwise the source is left untouched) By default, Calibre doesn't touch book or write metadata in them.Ĭalibre works like that (it's dumb as fuck mostly if you ask me, but the devs are pretty adamants extremists on not changing that behaviour for some weird reasons, pretending that it's "technical limitations" when other cataloguing software, for exemple plex/emby/kodi/jellyfin, tiny media manager, ubooquity and throngs of others do it more than fine :D) :
