Set Password
Protect your PDF with a password
All processing happens in your browser. No files are uploaded to any server.
Note: Client-side PDF encryption has limitations. This tool processes and optimizes the PDF, but full AES-256 encryption may require dedicated desktop software.
Drop your PDF here or click to browse
Supported format: PDF · Maximum file size: 100MB
How to Use
- Upload the PDF file to protect.
- Enter and confirm your password.
- Click the 'Protect' button.
- Download the protected PDF.
FAQ
What happens when I set a password on a PDF?
You will need to enter the password every time you open the protected PDF.
Is PDF encryption possible in the browser?
This tool modifies PDF metadata on the client side. Full AES encryption may require dedicated software.