PDF Signature Tool
ThePDF
Free online pdf signature tool - add digital signatures and sign marks to PDF documents. No installation, no sign-up required. Works entirely in your browser.
Drag & drop your file here or click to browse
Draw your signature below:
Output
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Drag & Drop
No file picker needed.
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Client-Side
PDF stays on device.
💰 Completely Free
No sign-up, no credit card, no hidden fees. Free to use forever.
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No Size Limit
Any PDF size.
How to Use PDF Signature Tool
- Upload PDF by clicking or dragging
- Select pages to process
- Click Process and wait
- Preview output to verify
Frequently Asked Questions
❓ Are electronic signatures legally binding?
In most jurisdictions, electronic signatures are legally valid under laws like ESIGN Act (US) and eIDAS (EU) for most documents.
❓ What's the difference between electronic and digital signatures?
Electronic signatures are any electronic mark of agreement. Digital signatures use cryptographic certificates for verification and are more secure.
❓ Can I use a drawn signature?
Yes, hand-drawn signatures captured on screen are a valid form of electronic signature for most purposes.
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