Put a password on a PDF, or take one off PADLOCK
Lock a PDF with a password so it cannot be opened without one, or take the password off one you have the password for. The file is read and rewritten in this tab.
The PDF
Drop the PDF here, or
Lock it
The password to open it is the lock. The owner password only sets what a reading program is asked to allow.
Unlock it
Its password, either the one to open it or the owner password. A file that opens without one is unlocked with none.
The result
How it works
The owner password that stops printing or copying protects less than most people think; the open password is the one that matters.
Doing this often? PDF Studio also signs PDFs with a certificate from a .p12 file, and checks the signatures already in one. On its own, US$4 a month; with everything else, US$9 a month or US$79 a year. 7 days free.