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Hello /p/, I figured I'd ask here instead of /g/ since I thought you guys would be more familiar with the topic, but does anyone know how to add a custom metadata tag to an image file (jpeg or png)?
Well, it's more of an embedded/hidden message in the metadata than a tag, preferably one that won't show up in most common image viewer tools that can read said metadata, like say, Windows' default image viewer or photoshop. Just something the average Joe won't find, even if they were slightly more clever and know about using metadata editors to add a comment