You can resize (enlarge or reduce) a page displayed in the image view or text view.
Click in the view you want to enlarge or reduce to make it active.
Choose a size option in the Zoom drop-down list in the Standard toolbar.
Or, choose Zoom in the View menu and select a size option in the drop-down list.
The page resizes as specified.
TIP: You can also zoom in or out on a page image in the image view by clicking the Zoom in and Zoom out buttons on the Image toolbar.