What encryption is used?

256-bit AES, the strongest standard PDF encryption. The same password is set for opening the document.

Are my file and password uploaded to a server?

No. The PDF is encrypted entirely in your browser, so neither the file nor the password ever leaves your device.

What happens if I forget the password?

There is no way to recover it. Without the password the PDF cannot be opened, so store it somewhere safe.

Protect PDF with a password

Lock a PDF with a password so only people who know it can open the file. Encryption uses 256-bit AES and runs entirely in your browser, so your document and password never leave your device.

Drop pdf file here, or click to browseMax 100 MB per file

How to protect pdf

Upload the PDF you want to protect.
Choose a password and confirm it.
Click Protect and download the encrypted PDF.

Frequently asked questions

What encryption is used?: 256-bit AES, the strongest standard PDF encryption. The same password is set for opening the document.
Are my file and password uploaded to a server?: No. The PDF is encrypted entirely in your browser, so neither the file nor the password ever leaves your device.
What happens if I forget the password?: There is no way to recover it. Without the password the PDF cannot be opened, so store it somewhere safe.