Sign PDF Online — Free & Private
Draw your signature and add it to any PDF. Position on any page — 100% in your browser. No upload, no signup.
Drop a PDF to sign
PDF files only
🔒100% Private — Your files never leave your device. All processing runs locally in your browser.
How It Works
Upload a PDF, draw your signature on the canvas pad, then position it on any page. The canvas signature is converted to a PNG and embedded into the PDF using pdf-lib.js — no server interaction.
Adjust the signature size, horizontal position, and vertical position using slider controls. Choose which page to place it on, then download the signed PDF instantly.
Features
- ✓Touch-friendly signature canvas — works on desktop and mobile
- ✓Place signature on any page in the document
- ✓Adjustable signature size, position (X/Y)
- ✓Preserves all original PDF content
- ✓Instant download — no watermarks
- ✓100% client-side — your PDF never leaves your device
Frequently Asked Questions
Yes, 100% free with no limits.