Protect PDF
Add a password to encrypt your PDF.
Processed on your device. Your files never leave your browser.
Drop PDF here or click to browse
Encrypted on your device with AES-256. Nothing is uploaded.
About Protect PDF
Protect PDF adds a password to your PDF so only people with the password can open it. The file is encrypted with strong AES-256 encryption directly in your browser using the qpdf engine — your document and password are never uploaded to any server.
How to use
- 1Select or drop the PDF you want to protect.
- 2Choose a password and confirm it.
- 3Click 'Protect & download' to get your encrypted PDF.
- 4Share the password separately with anyone who needs to open the file.
Features
- Strong AES-256 encryption.
- 100% in your browser — nothing is uploaded.
- Set and confirm your own password.
- Works on any standard PDF file.
Frequently asked questions
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