Select PDF files
or drop PDFs here
How to Protect a PDF File
1
Select the PDF you want to secure from your device.
2
Enter a strong password that will be required to open it.
3
Click 'Protect PDF' to encrypt the document.
4
Download your password-protected PDF instantly.
Why Protect a PDF?
Sensitive documents need a lock. Adding a password encrypts the PDF so only people who know the password can open it, keeping contracts, statements, and records safe when you send or store them.
Control Who Opens It
Only people with the password can read the document.
Real Encryption
The file is encrypted, not just hidden, so the content stays protected.
Set Up Privately
Your password and file are processed in your browser, never uploaded.
Protect PDF FAQ
What happens when I protect a PDF?
The document is encrypted and a password is attached to it. From then on, anyone who opens the file is asked for that password, so people without it cannot view the contents. Be sure to remember the password you set.
Is the password processed safely?
Yes. Both your password and the PDF are handled entirely in your browser on your own device. Nothing is uploaded to a server, so your password and confidential file never leave your computer.
Can I remove the password later?
Yes. As long as you know the password, you can use the Unlock PDF tool to remove the protection at any time. This lets you secure a file for sending and reopen it freely once it is safely received.