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eSign PDF

Add a signature certificate to your PDF.

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Your tools become available as soon as a PDF is in the workspace.

How to Sign a PDF Online

Create and apply a digital signature certificate to any PDF document with SnapPDF AI's free eSign tool. Enter your name and reason for signing, and download your signed PDF in seconds.

Key Features

  • Add digital signature certificate to PDF
  • Include signer name, reason, and timestamp
  • No plug-ins or software required
  • Works in any modern browser
  • Free and instant

Frequently Asked Questions

Q: Is this a legally binding signature?
A: This tool creates a signature certificate layer. Legal requirements vary by country. Consult a legal professional for legally binding contracts.
Q: Can I add an image of my handwritten signature?
A: Currently the tool creates a text-based certificate. Image signature support is in development.
Q: Is eSigning free?
A: Yes, completely free.