Password protect PDF

Add a password to encrypt your PDF.

100% in your browser Truly free — no sign-up, no card, no subscription.

Drop a PDF here or click to choose

AES encryption. Without the password the file cannot be opened. Neither the PDF nor the password leave your device.

How it works

Encrypt a PDF with a password (AES) so it cannot be opened without it — entirely in your browser, without uploading it to any server. Neither the file nor the password ever leave your device.

Frequently asked questions

Does the password travel over the internet?

No. Encryption happens in your browser; neither the file nor the password leave your device.

What if I forget the password?

There is no way to recover it — that is the point of encryption. Keep it somewhere safe.