Click File.
Click Print. The preview appears to the right of the print options.
The zoom slider in the bottom-right corner of the PowerPoint window works in Print Preview as well. Use it to zoom in on and out of your preview to review the contents.
You can add a Print Preview icon to the Quick Access Toolbar if you want to open Print Preview with a single click.
Drag the scroll bar to move to any slide in the presentation.
Click above or below the scroll bar to move forward or backward one slide or page at a time.
Click the Next Page or Previous Page button to move forward or backward one slide or page at a time.
Enter a number in the current page indicator in the bottom-left corner of the preview pane and press Enter to display that slide.
Click Zoom To Page to adjust the size of the slide to fill the window.
The Zoom dialog box lets you choose a percentage in which to display a slide. You can double-click the percentage number on the zoom slider to quickly display the Zoom dialog box in Print Preview.