How to Add Owner-Level Restrictions to PDF File?
I am looking for a way to add owner-level restrictions to a PDF, like preventing users from copying, printing, or editing the content without permission. I want to secure a document before sharing it externally. Is there a reliable method or tool that allows me to set such restrictions effectively? Also, do I need a password for owner-level restrictions, and how does that differ from user-level passwords?

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John Merritt commented
To add owner-level restrictions to a PDF file, you need to set a permissions password that allows you to control access and modifications. This password is separate from the document open password. To set this security on PDF files safely, you can take the help of a professional tool like Softaken PDF Protector Software. This expert program helps you to add an owner-level password to the PDF file without installing any external tool. This utility is simple and easy to use no tech expertise is needed to utilize this software. However, this software is fully compatible with all versions of the Windows Operating System.
Read More: https://www.softaken.com/pdf-protector