Protect PDF
Add password protection to your PDF
Secure your PDF with a password so only authorized people can open it. Uses RC4 128-bit encryption. Processing happens entirely in your browser — your file and password never leave your device.
Drop files here or click to browse
Accepted: .PDF
How to Password Protect a PDF
Upload your PDF, enter a password (and confirm it), then click Protect PDF. The tool encrypts the file in your browser and gives you a password-protected PDF to download. Anyone who tries to open it will need the password.
Common Use Cases
- Protecting confidential business documents before sharing
- Securing tax returns, contracts, or legal files
- Adding a password before emailing sensitive PDFs
- Restricting access to personal documents stored in the cloud