Signature Extractor
Turn a photo of your signature into a clean PNG with a transparent background.
Signature Extractor takes a photo or scan of your signature on paper and turns it into a clean image of just the ink on a transparent background. It ignores shadows and uneven light from phone photos, trims the empty space around the signature, and can recolor the ink black or blue. Use the PNG with Sign PDF, in Word, or on any form that asks for a signature image. The photo is processed in your browser, so your signature is never uploaded.
How to use Signature Extractor
- 1
Sign on white paper
Use a dark pen and take a photo in good light, or scan the page.
- 2
Add the photo
Drop or choose the photo. The signature is extracted straight away.
- 3
Fine-tune
Adjust the sensitivity and choose original, black or blue ink.
- 4
Download
Save the transparent PNG.
What it does
- Handles shadows
- Each spot is compared with the paper around it, so uneven light doesn't leave grey patches.
- Smooth edges
- Stroke edges fade softly instead of looking jagged.
- Auto crop
- Empty paper around the signature is trimmed away.
- Private
- Your signature stays on your device.
Questions
How do I get the best result?
Sign with a dark pen on plain white paper, and take the photo straight on in daylight without your shadow over the page.
Why are parts of my signature missing?
Faint or thin strokes can drop out. Raise the sensitivity; if paper texture starts to appear, lower it slightly.
Can I use it to sign a PDF?
Yes. In Sign PDF, choose Image and pick the PNG you downloaded.
Is my signature uploaded?
No. It is processed in your browser and never sent anywhere.