Unlock PDF
Remove protection only when you provide the valid PDF password.
- On your device
- No signup
- Stays on your device
Security
Protect PDF
Upload an unlocked PDF, set an open password, and download an encrypted copy. Encryption works on your device—your file and password never leave your device.
Stays private
Processed on this device
Clear progress
Real stages, no fake percent
Honest output
Limits and warnings included
PDF
On-device processing
PDF output
25 MB max
How it works
- 1
Upload
Choose and validate your file
- 2
Process
Review options and run the tool
- 3
Download
Check the result and save it
Keep working
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Helpful answers
Is Protect PDF free?
Yes. It is free to use and you do not need to sign in or create an account.
Is my data private?
See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.
Can I use Protect PDF on mobile?
Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.