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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!
You're basically looking for DRM and I'm not aware of any DRM system that you as a non-media-conglomerate can use.
I'm also not aware of DRM that is actually effective. It's mostly snake oil or, at best, "please don't steal"-signs.
The ultimate Achilles' heel of any DRM system is the analog hole: As soon as the user has an image on their screen, they can take a photo of said screen and share that in any way they want.
As with multi-media piracy, you cannot solve this issue using technology.