This difference checker is very intuitive to use yet very powerful.

1. You can click on image to magnify immediately on the first image, second image and the difference image simultaneously.
2. It supports quite a few popular formats.
3. Even the first and second image are of difference size, a difference image can still be produced.
4. You can choose a R/G/B/A color channel to compare, and the difference can be saved as a file.
5. The difference image can be generated in no time.