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Free Signature Cleaner
Clean a photo or scan of your signature in your browser — remove the paper background (white or transparent), darken the ink, and download a PNG. Nothing is uploaded.
Signature Cleaner
Files you add are processed entirely in your browser — nothing is uploaded to our servers.
How it's calculated
- • Runs entirely in your browser using the Canvas API — your image is never uploaded.
- • Pixels brighter than the threshold become background (white or transparent); darker pixels are kept as ink (optionally darkened to black or blue).
- • Best with a clear, well-lit photo or scan of a signature on plain white paper.
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