IM.js
Quick image comparison pixel by pixel.
Examples:
Test different image files with same pixel info.
Test different image files with, only, one pixel with different pixel info in one of the images.
Test different image files tolerance is set to 80% of matching. Only one different pixel.
Test different image files with different image info and show the diff in one new canvas.
Test different image files tolerance is set to 80% of matching. The different image has 50% of different pixel info.
Other projects:
Hydra.js
Hermes.js
Design Patterns
Cutter.js
CSSplus