You can zoom in or out on a slide and view Keynote full screen.
You might want to enlarge (zoom in) or reduce (zoom out) your overall view of a slide. For example, zoom in to focus on the cells of table or zoom out to work on the layout of your slide.
Click
in the toolbar and choose an option:
A percentage: The slide enlarges or reduces to the specific percentage.
Fit in Window: The slide adjusts to fill the window.
You can expand the Keynote window to fill the entire screen.
Do one of the following:
Click the green button in the top-left corner of the Keynote window.
Choose View > Enter Full Screen (from the View menu at the top of your screen).
To see the Keynote menu and other menu bar controls, move the pointer to the top of the screen.
To return to regular view, move the pointer to the top of the screen, then click the green button or choose View > Exit Full Screen.
To return to regular view, move the pointer to the top of the screen, then click the green button, or choose View > Exit Full Screen.