Compare Two Images
Compare equal-size images with a slider, pixel difference map and downloadable report.
First image
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
Second image
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
100% local processing
How to use
- 01
Choose a JPG, PNG or WebP image, or try the local sample.
- 02
Choose a second image of the same dimensions and set the difference threshold.
- 03
Compare the slider and difference map, then download the PNG or JSON report.
Details and tips
How it works
Comparison uses orientation-corrected pixels without resizing or alignment. It checks alpha and premultiplied RGB channel differences; fully transparent hidden colors are ignored. The report includes changed-pixel counts and mean channel difference.
Made for everyday images
Inspect compression changes, compare design exports and locate screenshot differences.
Frequently asked questions
Can I compare images of different sizes?
Resize or crop them to identical dimensions first. The tool rejects a mismatch rather than silently changing the comparison.
Are my images uploaded?
No. These tools process image data on your device. Images and encoded text are not saved to your account.
Which images are supported?
JPG, PNG and WebP up to 8192 px per side and 16 million pixels. Pixel-based effects and comparison use a single still frame of animated files. Base64 conversion preserves original bytes and has a 5 MiB file limit.