Q1: What is the best way to password protect PDF for me?
There are two types of password protect PDF to choose from: online and offline. The online to protect pdf does not require the installation of task software, as long as you have internet access. But the offline version needs to download and install the software in order to work.
Q2: How to encrypt pdf on mac?
You don't need to install the task software. You can encrypt pdf online, just use the browser that comes with your system.