Hey everyone,
I have a ton of pngs, jpgs, webps, mostly of fantasy art. I want to be able to mass-tag them with things like "character", "environment", "elf", "demon", etc. and then view them based on tags. Can anyone recommend software like this for linux? Bonus points if it also works on windows. Thanks!
An other solution could be exiftool by Phil Harvey. Don't judge by how the website looks... It's probably the best and most complete tool to edit the metadata directly into your images (and way to much other formats xD).
Even though it's very well documented, exiftool is very complex and there's a lot to read and grasp before getting comfortable with it. There's always the forum if you have any question, but before asking the forum go through the FAQ (yes I know it's huge... But as starting point look at number 11) and search a similar question in the forum.
Here I found a topic that looks like what you're a looking for:
https://exiftool.org/forum/index.php?topic=7894.0