Digital Signature

Add your signature to PDF documents

Multiple Methods

Draw, type, or upload signature

Customizable

Adjust size and position

Legal Signature

Works for document signing

About Digital Signature

PDFNinja's Digital Signature tool allows you to add legally-binding signatures to your PDF documents. Whether you need to sign contracts, agreements, or other important documents, our free online tool makes it easy. Draw your signature with your mouse or finger, type your name in a signature font, or upload an image of your handwritten signature. Position it anywhere on the document and download the signed PDF instantly.

Key Benefits

  • Free and easy to use
  • No registration required
  • Browser-based signing
  • Instant results
  • Professional appearance
  • Secure processing

Features

  • Draw signature with mouse
  • Type signature in script font
  • Upload signature image
  • Adjustable position
  • Customizable size
  • Multiple color options

Common Use Cases

  • Sign contracts online
  • Sign legal documents
  • Sign agreements
  • Document authorization
  • Form signing

Privacy Guaranteed

All processing happens locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.