Protect PDF
Add a password to a PDF so only people with the password can open it.
About Protect PDF
Encrypt a PDF with a password so it can only be opened by people who know it. The encryption is applied in your browser using strong, standard PDF security — your document and password are never uploaded to a server.
How to use Protect PDF
- 1
Upload the PDF you want to protect.
- 2
Enter a password and confirm it.
- 3
Click 'Protect & Download' to get the encrypted file.
- 4
Share the password separately with anyone who needs access.
Frequently Asked Questions
Is my password sent anywhere?
No. Encryption runs entirely in your browser. Your file and password never leave your device.
What happens if I forget the password?
There is no recovery. Keep your password somewhere safe — without it the PDF cannot be opened.
Can recipients still print or copy?
Yes, opening with the password allows printing and copying. Editing is restricted by default.