Compare two images pixel by pixel
Load two screenshots or photos and switch between side-by-side, overlay and split views. The difference is computed at the images’ real resolution, so you can zoom in on exactly what moved.
Features & FAQ
- Side-by-side, overlay with adjustable opacity, and a draggable split slider
- Pixel-level diff that highlights only what actually changed
- Pan and zoom both images together to inspect small details
- Export the diff as a PNG for bug reports or design reviews
Frequently asked questions
- Which image formats are supported?
- Anything your browser can decode: PNG, JPEG, WebP, GIF, BMP and SVG. Each image is compared at its own resolution.
- What if the two images are different sizes?
- They are aligned by their centre and the union of both areas is used, so nothing gets cropped away. The parts that exist on only one side show up as differences.
- Are my images uploaded?
- No. They are decoded locally with the Canvas API; no request carries image data anywhere.