I would say an image archiver like Hydrus might be suitable for an individual, but I don’t think it would have anything for your multiuser use-case.
I am curious if any popular keyboards accept custom gify/etc replacement URLs. It’d be pretty slick to set up Heliboard or Futo keyboard with an integrated self-hosted gify
Thanks! I’ll have to check it out myself.
It doesn’t help if folks are iOS, but perhaps ludicolo@lemmy.ml could set up a file sync server (e.g. nextcloud, etc) that syncs the files to their phones, and then an app like this could be used to pick images?
Or maybe there’s a way to set it up to read from a WebDAV mount point either in application or through Android?