MARZPDF Password Protector
Add a password to encrypt and protect a PDF.
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About this tool
Upload a PDF and set a password so it can only be opened by someone who knows it — encryption happens entirely in your browser before download.
How to use
- Upload a PDF file.
- Enter and confirm a password.
- Download the password-protected PDF.
FAQ
Where is my password stored?
Nowhere — it's used locally in your browser to encrypt the file and is never sent anywhere or saved.
What happens if I forget the password?
There is no recovery — the PDF cannot be opened without it, so store it somewhere safe.