Heatmap mode highlights changed areas in red — perfect for spotting design regressions?

Heatmap mode highlights changed areas in red — perfect for spotting design regressions.

Use High sensitivity to catch even tiny color shifts (e?

Use High sensitivity to catch even tiny color shifts (e.g., compression artifacts).

The slider mode lets you interactively drag to reveal differences between versions.

Compare two images pixel-by-pixel with side-by-side slider, heatmap overlay, and difference statistics

Compare two images pixel-by-pixel with a side-by-side slider, heatmap overlay, and difference statistics — all processing in your browser.

1Upload the first image (Image A) via drag-and-drop or file picker.
2Upload the second image (Image B).
3Choose a comparison mode: Slider, Heatmap, Side by Side, or Diff Only.
4Adjust the sensitivity level (Low, Medium, High) to control how subtle differences are detected.
5Review the difference statistics: changed pixels, percentage, average and max delta.
6Export the heatmap or diff image for documentation.

Heatmap mode highlights changed areas in red — perfect for spotting design regressions.
Use High sensitivity to catch even tiny color shifts (e.g., compression artifacts).
The slider mode lets you interactively drag to reveal differences between versions.

Free: 3 comparisons/day. Starter+: unlimited comparisons, batch mode.

OneKitTools TeamUpdated 2.21.4