Secure & Sign

Protect PDF

Add a password and encryption to keep a PDF private.

  • 100% free
  • Processed on your PDF AutoPilot server
  • No sign-up

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How to protect pdf

  1. 1

    Upload the PDF you want to protect.

  2. 2

    Choose a strong password.

  3. 3

    Encrypt the file on the PDF AutoPilot server.

  4. 4

    Download your password-protected PDF.

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Guides & tutorials

Step-by-step help that uses Protect PDF.

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Frequently asked questions