Jellyfin actually works for ebooks too. It does all the things you specified and more.

Not sure about comic support, but I think you can get much of that using a combo of Calibre and Calibre-web-automated.

Kavita. It started for comics and moved on to books. It supports OPDS, the standard by which readers like KOReader and Mihon connect to fetch books.

I have tried so many, Calibre (not good for graphic novels), Komga (very dated in comparison to Kavita), and more, but for both graphic novels and books, it won't be beat.

@4dpancake92@lemmy.world if you like Komga, take a look at Kavita. I was happy with my switch.

I'm not sure if any app syncs progress with eReaders, but I haven't looked into it. Maybe KOreader can? Other than that Audiobookshelf works well with ebooks. I haven't tested it with graphic novels, but it does handle regular ebooks (PDF and EPUB) just fine.

I do this with a calibre/calibreweb docker stack, and fbreader on my tablet/phone. Unfortunately you need to use g drive for progress sync, but that's not a huge roadblock.

Did you try / look at Koreader?

Maybe take a look at Komga. It does support both ebooks and graphic novels, has koreader sync for progress and can even share/distribute stuff via OPDS to koreader and other clients that support OPDS.

However file uploading is not directly possible, maybe this would work with something like a Nextcloud server?!

Haven't tried it with graphic novels but BookLore is being very actively developed so if it doesn't already support them it may be a worthy feature request.

Not sure if it fully meets your needs, but what about komga?

I think CWA had a recent update where they implement syncing progress with KOReader

I'm looking for the same. I've used moon reader on android and it can sync progress between devices. Also it supports WebDAV, so calibre may work but I haven't tried it

Not a full hosting solution, but I use PerfectViewer on Android and it's wonderful. Connects right into my server and displays all of my books and Manga on a shelf layout. It only syncs to my server locally because I don't have a VPN to my home configured, but it does allow downloading which is handy when I'm traveling. I'm not sure if it has every feature you're looking for but it might be worth checking out.

I just use AudioBookshelf for books. It's a little annoying, but basically just requires an extra nested folder structure.

The best part is offline reading seems to resync back to the server, so you can download books for local reading or read through an internet connection.