Password-protect a PDF on Mac
Add a password needed to open the PDF.
Three steps. That's it.
- 1
Drop your files
Drag files onto Add Password, choose them with Choose Files, or right-click them in Finder.
- 2
Choose the options
Set what you need in the options panel, such as password and confirmation. Your choices are remembered for next time.
- 3
Get the result
The result lands in a new dated folder in Downloads › OneMacTools. Your originals are never changed.
What Add Password does
Encrypt a PDF so it can only be opened with a password. The password is never stored by OneMacTools.
Options
Great for
- Email a payslip or bank statement safely
- Protect a contract
- Share medical documents
Questions about Add Password
Does Add Password upload my files?
No. Add Password runs entirely on your Mac, so your files never leave it and it works offline.
Will Add Password change my original files?
No. Results are saved as new files in a dated folder in Downloads › OneMacTools, and your originals are left exactly as they were unless you turn on an option that says otherwise.
What does Add Password need?
Just a Mac with macOS 26 or later. There's nothing else to install.
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Add Password, plus 88 more.
One app. One price.
All 89 tools for $29, once. 14-day money-back guarantee.