Sign PDF
Draw a freehand signature with your mouse or touchscreen and add it to your PDF, entirely in your browser.
Sign PDF tool
100% Privacy
Files stay strictly on your device. Zero server uploads.
Instant Speed
Local browser WebAssembly & JS processing engine.
Free Forever
Unlimited usage with no hidden fees or watermarks.
How to Sign a PDF Document
Upload PDF
Upload the PDF document to sign.
Draw Your Signature
Draw your signature using your mouse or touchscreen.
Download
Download the signed PDF.
Start using Sign PDF now – it’s completely free and works instantly in your browser.
Frequently Asked Questions
Can I type or upload a signature image instead of drawing?
Not currently — only a hand-drawn signature (via mouse or touchscreen) is supported.
Can I drag the signature to a specific spot, or sign multiple pages?
Not currently — the signature is placed automatically in a fixed position on the last page. Manual placement and multi-page signing aren't supported yet.
Is this a legally binding signature?
A drawn visual signature is not the same as a certified e-signature. For contracts requiring legal validity, use a certified eSignature service.
Is my document uploaded?
No. Everything is processed in your browser.
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