Password protect a PDF
Before emailing a contract or a financial report, lock it with a password so only the people you choose can open it. Encryption happens inside your browser, so neither the file nor the password leaves your device.
Drop your files here
Files are processed on your device and never uploaded
Three steps, that's it
Drop a PDF into the tray
Type the password you want to set
Click protect, then download the locked file
Frequently asked questions
Which encryption is used?
AES with a 128-bit key, a standard part of the PDF specification, so the file opens directly in Acrobat, macOS Preview, and Chrome with no extra software.
Can you recover the password if I forget it?
We cannot. Neither the file nor the password ever reaches us, because everything runs inside your browser. Save the password somewhere safe before closing the page.
Can I re-protect a file that already has a password?
Unlock it first with our unlock PDF tool if you know the current password, then protect it here with the new one.
