Protect PDF
Encrypt a PDF with AES-256 so it cannot be opened without the password, and optionally block printing, copying or editing.
Files never leave your deviceFree, with no page limitsNo sign-up, no waiting
Select a PDF
or drop it here — nothing is uploaded
Options
Processed on your device — nothing is uploaded
Questions about protect pdf
Where is my password sent?
Nowhere. Encryption happens inside your browser tab; neither the file nor the password ever leaves your device.
What if I forget the password?
The file cannot be recovered. AES-256 has no back door — keep a copy of the password somewhere safe.