Get Suspicious Package free from the developer (for macOS and Mac OS X).If any of this sounds interesting to you, you’ll want to download and install the application, which includes a Quick Look plugin: pkg files on a Mac is not particularly complicated though it’s obviously most appropriate for advanced users who will have a general idea of what they’re looking at and what to make of it. Using Suspicious Package to open and inspect. This is where the amusingly named ‘Suspicious Package’ application comes in to play, it’s a free Mac app which allows the opening and inspection of PKG installer files before the installation is actually executed, giving you a look at what is going to happen when the PKG is run.
