How to use it
- Sign a sheet of white paper and photograph it straight on in good light.
- Drop in the photo; adjust the Keep faint strokes slider and the ink colour if needed.
- Download the transparent PNG.
How it works
A signature doesn't need artificial intelligence: the tool estimates the brightness of the paper locally, so the paper disappears evenly even on a phone photo with uneven light and shadows. Each ink pixel's transparency comes from how dark it is, so thin, faint lines don't break up.
The Keep faint strokes slider sets how much of weak pencil or pen marks to keep. The ink colour can be the original, black or blue. By default the image is cropped around the signature with a small margin. Your image is never uploaded: the cut-out model downloads once and then runs in your browser. No sign-up, and no watermark on the result.
Tips for a clean result
- Write with a black or dark blue pen, not a pencil.
- Photograph from directly above so the signature isn't distorted, and keep the sheet flat.
- Make sure the phone's shadow doesn't fall on the paper.
- Place the finished PNG straight into a PDF with the sign PDF tool.
Note: an image of your signature is not a qualified electronic signature. Some official processes require a stronger signature; check with whoever receives the document.
Frequently asked questions
Do you upload my photo anywhere?
No. The cut-out model is downloaded into your browser and your own device processes the image. The photo never leaves it.
Is there a watermark or a lower resolution?
No. The download has the same resolution as your original photo, with no watermark.
Do I need a scanner?
No. A straight, well-lit phone photo is enough; a scanned image works just as well.
Last updated: November 13, 2026