Imgdiff
lastmod 2026-11-10created 2020-12-143 edits
imgdiff is a pixel-by-pixel image comparison command-line tool written in Go. It takes two images and produces a diff image that highlights the changed pixels, which suits checking whether screenshots have changed in visual regression testing. It has an option to ignore minor differences caused by anti-aliasing, and it claims to be faster than odiff, a similar tool.
Faster than the fastest in the world pixel-by-pixel image difference tool.