Protect PDF
Add password protection to your PDF file
Drop PDF file here
or click to select a file
Set a password to open this document
AES-256 encryption for maximum security
Fast cloud-based AI processing
Completely free and easy to use
Protect PDF step by step
- Upload the PDF file to protect
- Enter a strong password
- Click the protect button
- Download the password-protected PDF
Frequently asked questions
- Is this tool free?
- Yes. No sign-up, no watermark and no limit on the number of files.
- Is my file uploaded to a server?
- No. Your file is processed in your browser and never reaches our server. You can check this in the Network tab of your browser's developer tools.
- Does it work on a phone?
- Yes. It works in the browser on a phone and a computer, with nothing to install.