Another cool thing would be image diff viewing. Shouldn't be too hard to do some fancy adjust transparency of two images overlapping eachother with a slider to see the diffs.
Image diffing is already a thing: https://github.com/blog/817-behold-image-view-modes
Slashdot Mirror
Yep, it's https://github.com/sshirokov/csgtool
Another cool thing would be image diff viewing. Shouldn't be too hard to do some fancy adjust transparency of two images overlapping eachother with a slider to see the diffs.
Image diffing is already a thing: https://github.com/blog/817-behold-image-view-modes