This is the closest library I could find for my needs but I was disheartened to see it's so outdated. I started a fork at @christopher_carman/imagediff ([changes so far](https://github.com/carmanchris31/js-imagediff/compare/6e9d1ff5742a864992f6b86ea15c1a0ee4bc4bf7...master)) and would happily contribute back upstream.
This is the closest library I could find for my needs but I was disheartened to see it's so outdated.
I started a fork at @christopher_carman/imagediff (changes so far) and would happily contribute back upstream.