● A free public tool  ·  Built by Poptani Labs  ·  No sign-up  ·  Your files never leave your browser
Free · No sign-up · 100% in your browser

Sign PDF.

Draw, type, or upload your signature — then drag it onto any page of your PDF. All on your device.

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Add your PDF

📁 Drop your PDF here, or click to browse
Files stay on your device — nothing is uploaded

Good to know

Is this signature legally valid?

It creates a standard electronic signature — accepted for most everyday documents like contracts, offer letters, consent forms, and internal approvals. Banks, courts, and some government filings require certified digital signatures (with a cryptographic certificate); this tool doesn't create those.

Do my files leave my browser?

No. Signing runs 100% on your device using open-source libraries (pdf-lib, pdf.js). Nothing is uploaded, stored, or tracked. See the privacy policy.

What about password-protected PDFs?

Encrypted PDFs can't be processed in the browser — you'll see a clear error. Unlock the file first, then sign it.