this post was submitted on 02 Oct 2025
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Hmm, afaik other than some generated small thumbnails no remotely sourced images are stored on your server when you turn off the proxy. At least in theory, but the entire Pictrs integration in Lemmy is such a mess with random unexpected behavior that at this point I am hesitant to claim that no remote images ever get stored (there seem to be alternative code paths for specific image hosts like Imgur and crap like that).
I read the source code, the proxy essentially just hands all the responsibility down to pict-rs. Then pictrs has that environment variable where you can set how long-loved you want the thumbnail to be.