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Sign PDF
EditAdd a handwritten, typed or image signature to any PDF. Drag to position and resize. 100% client-side — your document never leaves your browser.
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Drop a PDF to sign
🔒 100% Private
Files never leave your browser. No upload to any server.
⚡ Instant
Processing runs locally on your device. No queues, no waiting.
🆓 Free & Open Source
No signup, no watermarks, no limits. MIT-licensed code.
Frequently asked questions
Is the signature legally binding?
A typed or drawn signature counts as an electronic signature in most jurisdictions for everyday agreements. For regulated industries you may need a certified PKI signature.
Where is my signed PDF stored?
Nowhere on the internet. Signing happens fully in your browser and the signed PDF downloads directly to your device.
Can I use a scanned signature image?
Yes — upload a transparent PNG of your signature and place it on the page.