Protect PDF with a Password
Encrypt a PDF with a password (AES-256) so it can only be opened by someone who knows it, entirely in your browser. Nothing is uploaded to a server.
Drag a PDF here, or click to browse
How to password-protect a PDF
- Upload a PDF file.
- Choose a password and type it twice to confirm.
- Click "Protect PDF" and download an encrypted copy.
FAQ
Are my files or passwords uploaded anywhere?
No. Encryption happens in your browser using WebAssembly. Your PDF and the password you choose never leave your device.
What happens if I forget the password?
The file can't be opened or recovered by us or anyone else -- we never see or store your password. Keep it somewhere safe.
What encryption does this use?
AES-256, the modern standard supported by current versions of Adobe Acrobat and most other PDF readers.