Do you see Summarize in the list like this screenshot? If not, you’re going to have to enable it. In this example in Preview I will go to Preview and then Services. Highlight some text and go to the Services menu. Open up a searchable PDF in Preview, a text file in a text editor, or a website in Safari. However, before I show you how to use it, we have to check if it is set up first.
Sometimes there are hidden features in the nooks and crannies of the Mac operating system, and Summarize Text is one of them.