According to Adobe, you cannot remove permissions from PDF files without being an administrator on the file. The administrator has full control and determines the permission settings.

PDF unlocker websites cannot remove the "Owner" passwords needed to open certain locked PDF files. Unlocker sites can only the remove the editing or permissions passwords required to make changes ...

How to remove the password from a PDF file using Adobe Acrobat Pro. Password from PDF can be removed using Google Chrome. How to remove password from PDF file on your Android mobile device.

This article discusses how to remove PDF passwords on different devices such as Android, iPhone, Google Chrome, and Mac. For Windows devices, you can follow similar steps. Open the PDF file using ...

Sometimes a PDF needs encryption. Sometimes it doesn't. Here's how and when you can remove unneeded encryption.

By following these methods, you can effectively remove passwords from PDF files on your Mac, whether you know the password or not.