OnlineDiff checker

Image Diff Checker

Original

Drop an image

PNG, JPEG, WebP, GIF, BMP

Changed

Drop an image

PNG, JPEG, WebP, GIF, BMP

Pixel-accurate visual comparison in your browser

Compare two images pixel by pixel in your browser. Side-by-side, overlay, and difference slider modes. 100% client-side.

Compare two images pixel by pixel directly on your device. Inspect UI screenshots, icons, design exports, or photo edits without uploading image files to any cloud service.

Switch between Side-by-side view, Difference overlay highlighting changed pixels in vivid color, and the Interactive slider mode to reveal changes seamlessly.

For comparing text inside a screenshot, use Text Diff.

Frequently asked questions

What image formats are supported?

PNG, JPEG, WebP, GIF, and SVG are supported via HTML5 Canvas.

How does the pixel tolerance slider work?

Tolerance sets the threshold for color difference between corresponding pixels before flagging a difference.

Can I see an overlay or slider view?

Yes, switch between Side-by-side, Difference overlay, and Difference slider modes.

Are images uploaded to any server?

No, images are decoded and compared strictly in browser GPU/Canvas memory.