Spot the difference
Overlaying both images at the same size makes small changes in sharpness, colour or compression obvious.
Compare two images side by side
Drop two images to compare them with a draggable slider. Ideal for checking compression quality, edits, retouching or two versions of a design.
Your images are processed on your device and are never uploaded.
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How to use this tool
- 01
Add two images.
- 02
Drag the divider, or focus it and use the arrow keys, to reveal each image.
- 03
Swap sides or compare another pair.
Works with any pair
Images with different shapes are fitted to the first image’s frame so both stay fully visible.
Frequently asked questions
Do the images need to be the same size?
No, although comparisons are clearest when they are.
Is the slider keyboard accessible?
Yes. Focus the divider and use the arrow keys, Home and End.
Are my images uploaded?
No. Both images stay in your browser.