Local processing · transparent PNG
Remove Stamp Background
Upload a photo or scan of a stamped paper document, then extract the red stamp into a transparent PNG. Crop, background removal, red enhancement and denoise all run locally in your browser.
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FAQ
Does this tool upload my stamp photo?
No. The image is processed locally in your browser with Canvas and is not uploaded to a server.
What images work best?
A clear scan or photo with a red stamp on light paper works best. Crop loosely around the stamp if the page has lots of other red content.
Can I use the result in the PDF stamp tool?
Yes. Click Send to PDF stamp tool to preload the transparent PNG in the PDF stamping workflow.