So, if you want to go back to using Mac Preview, simply highlight a pdf on your computer, right-click on the file and choose "Get info", choose the "Open with" drop down, select Mac Preview then click the "Change all" button then "Continue".
So, if you want to go back to using Mac Preview, simply highlight a pdf on your computer, right-click on the file and choose "Get info", choose the "Open with" drop down, select Mac Preview then click the "Change all" button then "Continue".