comictagger VS Komga

What you can try is to use https://github.com/comictagger/comictagger to pre-tag your books. If your books are already imported, you might need a calibre plugin called Embed Comic Metadata. So you can load your zips/cbz from the calibre folder into comictagger -> save. Then load metadata back into calibre via the plugin. BUT BE AWARE: It might override existing data like Title or Series. So doublecheck after autotagging and before re-importing metadata.

(Optional for metadata edits) ComicTagger https://github.com/comictagger/comictagger

For comics, I use comictagger + komga.

There's the bookshelf plugin that works rather well with comics and mangas in jellyfin. Most of my books/comics/mangas are tagged with the comictagger app available free on GitHub https://github.com/comictagger/comictagger.

I was going to suggest taking a look at comictagger - https://github.com/comictagger/comictagger. I'm not 100% on whether it can handle PDFs or epubs though

Well, for most manga, I first run it through ComicTagger: https://github.com/comictagger/comictagger

Look into comic-tagger. It's a CLI program which has the ability to parse file names of both CBZ and CBR and will attempt to match and pull metadata from comicvine. https://github.com/comictagger/comictagger/releases

If you do go with another alternative, you can still use ComicVine data with something like ComicTagger. I've not personally used it, but I've seen others use it with success. Hopefully that helps!

Komga

I'm into self hosted open source solutions, so I have an instance of Komga running in docker on my nas: https://komga.org/

Kavita or Komga are probably your best bets.

Calibre-web for ebooks, Komga for comics

Komga – it’s a self-hosted web app with a built-in reader (sort of like Plex but for comic books instead of movies/shows).