Sign PDF
Place a signature, logo or stamp (image) on a page of your PDF.
- Instant
- Free
- Private (processed locally)
- No sign-up
Place a signature on a PDF
Open your PDF, add the signature image (or a logo, a stamp), choose the page, position and size, then download. Perfect to sign a contract or add a stamp — without uploading your files.
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Open the PDF
Drag and drop the file.
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Add the image
Signature PNG, logo, stamp.
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Place and download
Page, position, size.
Tips
- Sign on paper, photograph it, cut out as transparent PNG
- Use opacity for a subtle stamp
- 9 positions to choose (corners, center)
- Adjustable size as % of page width
Use cases
| Need | Example |
|---|---|
| Sign a contract | Signature at bottom-right |
| Mark a document | “Paid” stamp or logo |
| Initial | Small signature per page |
| Approve | Company stamp |
Visual signature (a placed image), not a certified digital signature. 100% local processing, files never uploaded.
Frequently asked questions
What image should I use for the signature?
A transparent PNG gives the best result for a signature or stamp. JPGs work too, but their background (often white) will be visible.
Are my files uploaded?
No. The signature is placed in your browser via pdf-lib. Neither the PDF nor the image leaves your device.
Which page gets the signature?
The page you choose. Pick its number, then the position (9 spots), the size in % and the opacity.
Is this a legal e-signature?
It is a visual signature (a placed image), not a certified digital signature. For strong legal value, use a qualified signature service.