Protect PDF
Encrypt your PDF with a password so only people who have it can open it.
Choose a PDF file
or drop it here
How it works
Protect PDF adds password encryption to your document, so anyone who opens it must first enter the password you set. It's a simple way to keep sensitive files private when you email or share them.
- Upload your PDF
- Enter a password and confirm it
- Click Protect to encrypt the file
- Download your password-protected PDF
Frequently asked questions
What if I forget the password?
The password isn't stored anywhere, so if you lose it there's no way to unlock the file. Keep a copy somewhere safe.
What kind of encryption is used?
The file uses the standard password protection built into the PDF format, so it opens normally in Acrobat, browsers, and most readers once the correct password is entered.
Does the password also block editing or printing?
This tool sets a password required to open the file; it doesn't add separate restrictions on editing or printing.
Is my file safe while it's being protected?
Your file is processed securely and isn't stored after the task finishes.