czkawka VS fclones

You want content-addressed storage; this works with rolling content hashes that identify common blocks of memory. `rsync` uses that technique to minimize bytes to be transferred. https://github.com/qarmin/czkawka is a GUI app and CLI tool to find identical files in general and similar images in particular.

The task is much simpler if you only want to find bit-identical entire files, not part of files; in that case, you can just run a tool like `sha1sum` over each file and record the hash digest in a database; identical files—and only identical ones, with high probability—will have the same hash, non-identical ones will have different hashes.

You might be interested in this app: https://github.com/qarmin/czkawka

https://github.com/qarmin/czkawka by far the best of anything iv tried

I've used Czkawka (https://github.com/qarmin/czkawka) because it does Lanczos-based image duplicate detection, which makes it more practical for me.

Maybe it's a setting you made or the files, not sure. You can try another software czkawka to see if you get better results with it.

For static images i used https://github.com/qarmin/czkawka and it works well enough. I think. But when i used it on a folder with gifs and their jxl conversions, it shows nothing. SURELY this could not be user error, rrrright?

I used to use DupeGuru which has some photo-specific dupe detection where you can fuzzy match image dupes based on content: https://dupeguru.voltaicideas.net/

But I switched over to czkawka, which has a better interface for comparing files, and seems to be a bit faster: https://github.com/qarmin/czkawka

Unfortunately, neither of these are integrated into Photoprism, so you still have to do some file management outside the database before importing.

I also haven't used Photoprism extensively yet (I think it's running on one of my boxes, but I haven't gotten around to setting it up), but I did find that it wasn't really built for file-based libraries. It's a little more heavyweight, but my research shows that Nextcloud Memories might be a better choice for me (it's not the first-party Nextcloud photos app, but another one put together by the community): https://apps.nextcloud.com/apps/memories

Install fclones (fdupes modern equivalent)

I said "fclone" I meant "fclones" (https://github.com/pkolaczk/fclones) -- I missed the "s" at the end

While we're recommending stuff, fclones: https://github.com/pkolaczk/fclones

fclones: Efficient Duplicate File Finder.

Yes, that would be safer when available (although generally files within library dependencies are not modified I think?). It looks like fclones implements this, is faster and is written in Rust https://github.com/pkolaczk/fclones (the last is the most important point of course /s).