This signifies that the app is currently the default PDF viewer on your Mac For macOS, it’s Preview. StepHover the cursor on Open With and observe the dialogue box that appears. While this might allow In this film, we show the workflow for changing the default PDF viewer on macOS version The workflow is as follow;Run the get info command on docu Find a PDF fileRight-tap (Control key + click) on of PDF. In the menu, select Get Info.Whereas the Geting Infos window displays, expands to Open with