Protect PDF Online - Add Password to PDF Free
Protect PDF files online for free. Add a password to your PDF and download a secured copy to help prevent unauthorized access.
AES-256 encryptionPassword protectedBrowser processing
Private & secure
Your PDF and password are processed locally in your browser and are not uploaded to a conversion server.
How to password protect a PDF online
Upload your PDF, create and confirm a password, protect the document, then download the secured PDF.
1. Upload your PDF
Choose the PDF document you want to secure with password protection.
2. Set your password
Enter and confirm a password, and use the strength indicator to help choose a stronger password.
3. Protect and download
Protect the PDF and download the secured file for use in compatible PDF readers.