Protect PDF
How to password protect a PDF in seconds: lock any file with a password and choose what readers can do — print, copy, or modify. Runs 100% in your browser — your password never leaves your device.
Frequently Asked Questions
How do I password-protect a PDF?
Upload the PDF, set a password (at least 4 characters), choose the permissions you want to allow, then press Protect & Download.
What permissions can I control?
You can allow or block printing, copying text, and modifying the document, independently of each other.
What if I forget the password?
The password is only stored locally for the current session. Forgetting it means the file cannot be opened — store it somewhere safe.
Is protecting a PDF free?
Yes. It is completely free with no watermarks and no sign-up.
Are my PDFs or password uploaded?
No. Encryption happens entirely in your browser. Neither the file nor the password ever leaves your device.