Protect PDF

Add password protection to your PDF

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Drop your files here or

Accepted: .pdf · Files stay in your browser

Free · No signup · No watermarks · Files never leave your browser

How to use Protect PDF

Upload your file using the drop zone above.
Adjust any options for the protect pdf task.
Click Process and download your result instantly.

Why use PDFzelo Protect PDF?

Add password protection to your PDF. PDFzelo processes everything locally in your browser — no uploads, no waiting rooms, no accounts. It works on Windows, Mac, Linux, Chromebook, Android and iPhone.

Frequently asked questions

What encryption is used?

Strong AES encryption. Choose a user password (to open) and owner password (permissions).

Can I set permissions?

Yes. Restrict printing, copying and editing independently.