Password Protect PDF
Password protect a PDF file online for free. Encrypt with a strong password instantly. No signup.
Drag a PDF here or click to browse
Select a PDF to protect — processed in your browser
Processed entirely in your browser — never uploaded to a server. Files are deleted when you close this tab.
How to password protect a PDF
- 1
Upload your PDF
Drag your PDF file into the upload zone or click to browse.
- 2
Set a password
Enter a password (at least 4 characters) and confirm it to ensure there are no typos.
- 3
Download the protected PDF
Click 'Protect PDF' and download your encrypted file. Recipients will need the password to open it.
Why use this tool
- Simple password protection that works with any standard PDF reader.
- Browser-side encryption — your original file and password never leave your device.
- Protect sensitive contracts, financial documents, and personal records with minimal effort.
- The protected PDF is a standard encrypted PDF that works across all platforms and readers.