PDF Signature Tool
Draw and place a handwritten signature onto a PDF page.
Drop PDF files here
or click to browse
All processing is local · Nothing is uploaded
Processing...
Done
How to Use This Tool
- Drop or browse for one PDF.
- Draw your signature on the pad (or clear and redraw).
- Set page number and position, then click Apply Signature.
Common Use Cases
- Signing approval documents
- Internal authorization workflows
- Adding initials to review documents
- Signing contracts and agreements
Tips for Best Results
- Draw slowly for a smoother signature.
- Use the Clear button to retry if the signature doesn't look right.
- Adjust the width to make the signature larger or smaller; height scales proportionally.
- Y position is measured from the bottom of the page.
Frequently Asked Questions
Is this a legally valid digital signature?
This is a visual signature overlay, not a PKI/cryptographic digital signature. Legal validity depends on jurisdiction.
Can I place signatures on multiple pages?
Currently one signature per run. Apply to one page, download, then apply again for another page.
Important Notes
- This applies a visual signature image — it is not a cryptographic digital certificate.
- Adjust X/Y coordinates and width for precise placement.
- The signature is embedded as a PNG image on the specified page.
- All tools run fully in your browser. Your files are not sent to our server.
- Safe and free to use: no login, no signup, no paywall.
- Libraries used: PDF-Lib (MIT), PDF.js (Apache 2.0), Mammoth.js (BSD-2), JSZip (MIT).
- If you find a bug, please report it in the comments.
Comments & Discussion
Facing issues? Have questions? Post them here! We're happy to help!