
This is a neet sugestion and there is a cool android app to use on your tablet
ubooquity description:
Ubooquity supports many types of files, with a preference for ePUB, CBZ, CBR and PDF files.
Metadata from library management software Calibre and ComicRack are also supported.
Ubooquity can be installed on any OS supporting Java (Windows, Linux, Mac OS…) and on a wide range of hardware (desktop computer, server, NAS…).
Ubooquity lets you create user accounts and set access rights for each shared folder.
Connections can be protected (HTTPS) using your own certificate.
I have the same suggestion for books because Calibre Web isn’t a good solution. It requires setting up a database with the desktop app and is a complicated setup. Ubooquity does not require this.

Komga is also a neet alternative.