Protect PDF with Password
Secure your PDF by setting a password — works entirely in your browser
Click or drag and drop a PDF file here to upload
Frequently Asked Questions
What does the Protect PDF tool do?
This tool allows you to add a password to a PDF document directly in your browser. All processing happens locally to ensure your files remain private and secure.
Is it safe to protect my PDF online?
Yes. The password protection is applied client-side, meaning your file is never uploaded to any server.
What type of password protection is used?
This tool uses standard PDF encryption so that the file can only be opened with the password you set.
Do I need to install software?
No installation required. Works in any modern web browser.