Git Cola has image diffs. If you work with pngs or svgs, it can be pretty useful:<p><a href="http://git-cola.github.io/screenshots.html" rel="nofollow">http://git-cola.github.io/screenshots.html</a><p>Cola has image xor, image a-b difference, and side-by-side diff views.<p>The red emphasis in the git-diff-img 3-way display is kind of interesting. Do folks find that feature useful?<p>This could be an interesting concept to explore. It wouldn't be too hard to integrate into other tools since it's using imagemagick to do all the heavy lifting. That's pretty cool.