Immich is not stable yet. But as soon as it is, I’m using it to replace all of my galleries.

It doesn’t use OCR but it uses CLIP which accidentally unreliably does tag text like you would want once the images are server side.

There is discussion on GitHub about adding OCR so I imagine sometime after a stable it could be a feature.

Immich appears to have the most active development of all the FOSS gallery and backup apps.

So don’t use it now, but keep an eye on it for the future.