All tools

Sign a PDF

Step 1

Create your signature

Step 2

Open the PDF to sign

Drop a PDF here or click to open

No data is sent to a server.

Technical & Security Specifications

Visual signature (transparent PNG image) embedded in the PDF via pdf-lib v1.17 (embedPng + page.drawImage). PDF preview rendered by PDF.js v3.11. The drawn signature is captured from an HTML <canvas> with transparent background.

This is not a qualified electronic signature under eIDAS (no cryptographic certificate). For enhanced legal value, use a Trust Service Provider.

No file leaves your device. Libraries hosted locally.