Source A
Drop image A here
PNG, JPG, GIF, WebP, BMP, or any browser-readable image format.
Browser-only image processing
Image subtraction
Drop two images into the app and compare them by subtracting their RGB pixel values. If the source images have different dimensions, both are resized to a shared working size before subtraction. No files leave your browser.
Source B
Drop image B here
Load a second image and the result will be rendered below.
Result
- The app compares images by absolute per-channel pixel difference.
- Use the boost slider to exaggerate subtle changes and make small differences easier to spot.
- The invert toggle swaps bright and dark regions in the rendered difference image.
- If sizes differ, both images are resampled to a shared canvas using the larger width and height.
- The alpha channel is preserved from the normalized source images.