Enter PhantomPDF for Mac Yes, you heard right. For example, it’s not the easiest way to add objects into a PDF file or edit them once they’re there. But there are a lot of things that Preview leaves out. After all, it’s typically the default on a Mac, set to open the moment you double-click a file. By Frank Kettenstock, VP of Marketing For many Mac users, viewing and editing on a Mac means going to Apple’s built-in Preview application.