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.

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