RAW photo viewer and thumbnails

Is it possible to get photo views/thumbnails for RAW photos? JPG is working fine for me, but if I look at one of my raw files in the browser, I get the message: “Online view is not applicable to this file format”

I’m willing to roll up my sleeves and hack things up a bit if needed, but I’m having trouble finding out if this is even possible in Seafile.

I have it working in a nextcloud docker image using the “Camera RAW Previews” app, so I believe the underlying functionality is possible – but I don’t have a clue where to begin on trying to get something similar to work in Seafile.