Password protect a PDF

Add a password to any PDF so only the people you trust can open it. Encryption happens in your browser with strong AES — the file and its password never touch our servers.

Open your PDF — Drop the file into the workspace; nothing is stored on our servers.
Set a password — Choose a strong password and the PDF is encrypted with AES.
Download the locked PDF — Anyone opening it has to type the password first.

Strong AES encryption — a real lock, not a removable one.
No account, no app — works on the phone in your pocket.
Your file and password stay in your browser; nothing is uploaded.

What encryption is used?

Your PDF is locked with AES encryption, the standard supported by every modern PDF reader.

Can you see my password?

No. The password and the file stay in your browser and are never sent to or stored on our servers.

Will it open on any device?

Yes — the protected PDF opens in any standard reader on desktop or phone once the correct password is entered.