Protect PDF's qpdf command passes the single password typed in the form as both the user password and the owner password arguments when encrypting.
Protect PDF's password step provides one password field and one confirm-password field, with no separate control for setting an owner-only permissions password.
Protect PDFPDF Owner Password vs User Password
Upload the PDF file to the Protect PDF form.
Type the same password into both the password and confirm-password fields.
Apple's Preview documentation describes the owner password as controlling permissions like printing or editing, and notes it can be the same as or different from the user password required to open the document. Password-protect a PDF in Preview on Mac - Apple Support
Confirm the form shows two password fields and no permission toggles.
Download the encrypted PDF from the results screen.
Checking Permission Restrictions
Open the downloaded PDF in a viewer.
Print it.
Try to edit the text to verify the lock.
Continue with Protect PDF Before Sharing or Batch Password Workflow.
Frequently Asked Questions about PDF Owner Password vs User Password
Can I give the owner a different password from the user?
Search for a desktop editor with two distinct password role fields.
How do I confirm my password entry was typed correctly?
Compare the two password fields character by character before submitting.
How do I restrict copying instead of printing?
Search for a desktop editor with separate copying and printing permission settings.
How do I protect a second file with a different password?
Refresh the page and type a new password for the next file.