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A very simple and easy way to pretty much guarantee an image doesn’t contain unnecessary metadata, can’t be uncropped, etc. is to first convert it to JPEG and t
by jay-barronville 4y ago
A very simple and easy way to pretty much guarantee an image doesn’t contain unnecessary metadata, can’t be uncropped, etc. is to first convert it to JPEG and then run it through an image optimizer (like ImageOptim [1]). Don’t use cloud software for any of this — do it all locally.
[1]: https://imageoptim.com/mac https://imageoptim.com/mac
- sudobash1 4y agoPersonally, when I want to make sure that no metadata gets copied, I just take a screenshot. Simple, and nothing tricky.
- jay-barronville 4y agoYour screenshot likely has metadata encoded in it too.
- andix 4y agoI just checked the PNGs created by the Windows screenshot tool (win+shift+s). There was no obvious metadata inside. If there is something, it is not easy to find.
- icelancer 4y agoSnipping tool + recompression + conversion is usually enough to get the job done. That's what I do when I put public screenshots up that I care about redacting or protecting.
- deleted 4y ago[deleted]
- Permik 4y agoBtw, you don't actually want to use a lossy image container in the modification steps if you don't want to leak any data. JPEG has ways of extracting data that was either cropped out or written over, by how the compression is performed over the parts of/whole image. Compression artifacts can and will propagate data that you are not fully aware of. PNG is a safer bet for screenshot content for the middle steps. Only the final image should be compressed using a lossy image compressor as then any details can't be diffused to the image if they simply aren't there.
- syntaxfree 4y agoYou know what would be virtually unassailable? Send the original through img2img in stable diffusion