Protect PDF
Password-protect and encrypt your PDF files.
Drop a PDF here
or use the button below
About this tool
Add a password to your PDF so it can only be opened by people who know it. Encryption is applied locally in your browser — your file and password never leave your device.
Key Features
- Password-based encryption
- Confirm-password check
- Owner & user protection
- 100% client-side
How to Use
- Drop or select a PDF.
- Enter and confirm a password.
- Click Protect PDF and download.
Benefits
- Secure sensitive documents
- Control who can open files
- No account needed
Frequently Asked Questions
The PDF is encrypted so it prompts for your password on open. Use a strong, unique password and store it safely — it cannot be recovered.
No. Encryption happens entirely in your browser; nothing is uploaded.