How to use Protect PDF
- Choose a PDF.
- Enter and confirm a password; choose permissions if you want.
- Download the encrypted PDF.
Processed on your device
Protect PDF
Add a password to a PDF using AES-256 encryption. Optionally restrict printing, copying and editing. The password is used in this tab only and then cleared.
Your files stay on your device. No account. No upload.
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Files you choose stay on this device.
Your file stays on your device
Protect PDF runs entirely in this browser tab. The PDF is read from your device, processed here, and saved back to your device. It is not uploaded, and LittleOrMore never receives it. How privacy works
Questions
Is my password sent anywhere?
No. It is used in this browser tab to encrypt the file, never stored or sent, and cleared when the operation finishes.
Are permissions a guarantee?
No. Print and copy restrictions are honored by well-behaved PDF viewers but are policy, not absolute protection. The password itself is real encryption.
What if I forget the password?
It cannot be recovered. Keep the original or store the password safely.