Screenshot difference checker
Find exactly which pixels changed between a baseline and a candidate screenshot.
Load two screenshots
PNG, JPEG and WebP. Both images must have the same dimensions, up to four million pixels each. Images stay in this tab.
Load a pair to compare pixels.
Comparison
- Changed pixels
- Image size
- Changed area bounds
Pink marks pixels outside the tolerance.
Compare the same frame
Use the same viewport and scale for each capture. The checker composites transparent pixels on white. It flags a pixel when the largest red, green or blue change exceeds the tolerance. Changed-area coordinates start at the top left.
Motion, fonts and rendering differences can move many pixels. Use the screenshot overlay to decide which changes belong in your review.