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Protect PDF

Add password protection and optional permissions to a PDF.

Files are not uploaded · Processed locally in your browser

Protection settings

The owner password can bypass permission restrictions and is often required to remove protection later.

Advanced permissions

PDF permissions are advisory and not enforced consistently across all PDF viewers.

Tip: To remove a password later, use Unlock PDF.

About Protect PDF

Password-protect a PDF and optionally set viewer permissions before sharing.

Learn more →
  • Add password protection (AES/RC4 options).
  • Optionally set PDF permissions (print, copy, edit, etc.).
  • Runs entirely in your browser (no uploads).
  • Download a protected PDF instantly.