duplo VS PiGallery 2

And if you just want to go by the pixel data, look into "perceptual hashing". https://github.com/rivo/duplo works quite well for me, even when dealing with watermarks or slight colour processing / sharpening. You could even go further and improve your success rate with Neural Hash or something similar.

I looked at that library, but I would switch to another one. The author does like his loops in loops in loops in loops a lot. Perhaps : https://github.com/rivo/duplo is more usable?

If you want something easy to deploy, zero maintenance (almost) and with a tiny footprint I can't recommend PiGallery [1] enough. Also good mobile support.

I tried some of the fancy alternatives here suggested, but they insist in doing it their way. PiGallery just displays your folder structure as Albums, simple as that, whereas others like Photoprism keep ruminating in the background doing their AI, which I personally don't need.

Pair that with a good backup strategy with e.g. restic and you're ready to fly.

[1] https://bpatrik.github.io/pigallery2/

https://github.com/bpatrik/pigallery2 very fast and lightweight. Only an image gallery

Also check out PiGallery for a more light weight solution https://github.com/bpatrik/pigallery2 (with less features of course, but it may work if you only want an online gallery)

If you're familiar with Docker, PiGallery2 would work perfectly for this.

This is what you need: https://github.com/bpatrik/pigallery2

I'd also consider Pigallery2. It's maybe not as powerful as Photoprism, but it is very fast, lighweight and integrates quite well with the exiting image metadata (keywords and faces). It's a web interface, but it works quite well on mobile and the search option is powerful.