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protip: the reason that photo sharing websites rarely offer a "don't allow download" button is that such a button is trivial to bypass. just go in the web inspector and open there the network tab, and you'll see your photo fly by ready-to-download. (and yes even if you require a drm-enabled monitor there is still the analog hole, take a camera with a good flat macro lens and you're getting the same quality as the user sees).

the far better solution is to put a nice watermark on your photo's. it's still possible to remove with the right tools but it ain't trivial and expressely shows malicious intent.

personally my photo's are explicitely CC-BY-NC (and if you want commercial use just ask! i probably won't say no if it ain't bs) so i don't run in that problem. but it helps to know why it is like it is
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