You can zoom in or out of a document, and view Pages full screen.
You might want to enlarge (zoom in) or reduce (zoom out) your overall view of a document. For example, zoom in to focus on fine-tuning the placement of a caption or zoom out to work on the layout of your document.
Choose an option from the Zoom pop-up menu in the toolbar:
A percentage: The document enlarges or reduces to the specific percentage.
Fit Width: The document adjusts to fill the Pages window horizontally.
Fit Page: The document adjusts to show the whole page vertically.
By default, Pages documents open at 125%, but you can change that setting.
Choose Pages > Preferences (from the Pages menu at the top of your screen).
Click General, then choose a percentage from the Default Zoom pop-up menu.
You can expand the Pages window to fill the entire computer screen.
Do one of the following:
Click the green button in the top-left corner of the Pages window.
Choose View > Enter Full Screen (from the View menu at the top of your screen).
To see the Pages menu bar and other 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.