pdfSofo

How to turn a photo of your signature into a digital signature

Your real handwritten signature looks better than a typed one. pdfSofo lifts it from a phone photo: it removes the paper, shadows and lines and keeps only the ink, with no white box around it.

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Get a good photo

  • Sign on plain white paper with a dark pen (blue or black).
  • Take the photo in good light, straight on, with the signature filling most of the picture.
  • Avoid strong shadows from your phone or hand.

Make it digital

  1. Open Sign, then Create signature, then From a photo.
  2. Choose the photo. pdfSofo shows your signature on a checkerboard, which means the background is see-through.
  3. If strokes are missing, choose Faint strokes; if specks remain, choose Only bold ink.
  4. Save and place it on your document. It's kept in your browser for next time.
Free, no watermark, no sign-up, and your file never leaves your device.Sign a PDF now

Questions

Is the photo uploaded?

No. The background removal happens on your device.

Can I change the ink color?

Yes: blue, black or green.