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Secure Image sharing
(lemm.ee)
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
Beginning of January 1st 2024 this rule WILL be enforced. Posts that are not tagged will be warned and if not fixed within 24h then removed!
https://www.photoshelter.com/
https://www.pixelrights.com/
There was some discussion about adding DRM Management into the JPEG standard, but I don't believe that actually got implemented.
Signal, Whatsapp, and I think even Snapchat, has view once images. But it's best effort, somebody could certainly take a photo with another phone, or even disable the anti-screenshot feature in the option screen. It just raises the bar.