Quick answer
To get a clean signature, sign with a dark pen on plain white paper, take a well-lit photo, then open Clean up signature. It removes shadows and paper texture, makes the ink crisp, crops to your signature and saves a white JPG or a transparent PNG.
How do I photograph my signature?
- Use a black or dark blue pen on plain white paper.
- Sign a little larger than usual.
- Take the photo in daylight, from directly above, without your shadow on the paper.
How do I clean it up?
- Open Clean up signature and add the photo.
- Pick Black or Blue ink.
- Choose White (JPG) for forms, or Transparent (PNG) to place on documents.
- Click Clean signature and download.
If thin strokes disappear, raise Ink pickup. If grey patches remain, lower it.
Using the signature
| Where | Next step |
|---|---|
| Exam or job form | Exam presets or Resize image to KB |
| Sign a PDF | Sign PDF — draw or type, or add your image with Edit PDF |
| One image with your photo | Join photo & signature |
Your signature is processed only on your device. It's never uploaded or stored.
Frequently asked questions
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LocalPDF Team
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