Protect PDF
Add a password so only people who know it can open the file.
Free to useNo software to install — works in any modern browser.
No signup neededOpen the tool and start straight away.
Files deleted automaticallyUsed only to make your result. The result is deleted when you download it, or automatically after about an hour.
Works on mobileSame tool on your phone, tablet or desktop.
How it works
- Upload the PDF you want to lock
- Set a password
- Click "Protect PDF" and download the password-protected file
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About Protect PDF
Protecting a PDF adds a password requirement to open the file, which is a straightforward way to keep sensitive documents — contracts, financial statements, personal records — private when sharing them over email or storing them somewhere others might access.
This tool focuses on setting an open password: whoever has the file needs the password to view it at all. Anyone sharing the resulting file should share the password through a separate, secure channel rather than alongside the file itself.
This tool focuses on setting an open password: whoever has the file needs the password to view it at all. Anyone sharing the resulting file should share the password through a separate, secure channel rather than alongside the file itself.
Frequently Asked Questions
What kind of protection does this add?
It adds a password that's required to open the PDF, helping keep sensitive documents private.
Can I set both an open password and edit restrictions?
Currently this focuses on setting an open password to control document access.
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