Add PDF Password

Password-protect a PDF with AES-256.

Your file never leaves your browser.

How to password-protect a PDF

  1. Choose the PDF you want to protect.
  2. Enter and confirm the open password.
  3. Download the encrypted PDF.

Frequently asked questions

Is this PDF tool free?

Yes. It is completely free. No sign-up, no credit card, and no paid trial.

Does my file leave my browser?

No. Your file never leaves your browser.

What encryption is used?

The file is protected with AES-256 encryption for the open password you set.

Can I set separate permissions and owner passwords?

This tool sets an open password so viewers must enter it to read the PDF.