Tools
Stamp image tools
Clean uploads, extract ink by colour, crop, resize, rotate, or add a background — entirely in your browser.
Clean uploaded stamp
Remove white backgrounds and recolor ink for a transparent seal PNG.
Extract stamp by colour
Keep ink close to a chosen colour and clear the rest.
Crop stamp
Upload a seal photo, drag a round, square, or rectangle frame over it, and download the crop.
Resize stamp
Scale a stamp image to exact pixel sizes.
Rotate stamp
Rotate with optional canvas expansion.
Add background
Place a solid background behind a transparent stamp.