Source: https://restorebunny.com/tools/image-difference-checker/

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# Image Difference Checker

Compare two equally sized images using an adjustable pixel threshold. View a difference heatmap and download the comparison report.

Difference threshold 10

No signup. Files and calculations stay in this browser.

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## How to use image difference checker

1. Choose your inputs using the controls below.
2. Review the live result and adjust the settings.
3. Download your output and keep the source files.

## A practical example

At threshold 10, a pixel counts as changed when any decoded RGBA channel differs by more than 10. A 100 × 100 image with 200 changed pixels reports 2%.

## Frequently asked questions

Does image difference checker require an account?

No. This free utility processes files and calculations in your browser without uploading them.

What are the limits of this tool?

Both images must have the same pixel dimensions. Camera movement, compression and color decoding can create differences; this is not an AI or authenticity detector.

## Keep working on your photo

- [Browse all free tools](<https://restorebunny.com/tools/>)
- [Plan your photo book](<https://restorebunny.com/tools/photo-book-page-planner/>)

[Browse all free tools](<https://restorebunny.com/tools/>)

By RestoreBunny · Reviewed 2026-10-18. Utilities use local calculations or [browser image processing](<https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Pixel_manipulation_with_canvas>). The download button identifies the output format. Animated images export one decoded frame. Keep your original files.