Use Widescreen (16:9) or Standard (4:3) or choose a custom size for your slides.

Change the size, shape, or orientation of your slides for presentation or to simplify printing.

To set the page orientation for all of the slides in your presentation, on the Slide Master tab, select Slide Size > Custom Slide Size. Under Orientation, select the orientation you want.

To adjust the font size, select the current font size, and then select the new font size. Use the predesigned Themes to make sure that your slide design is accessible.

You can change the slide size and orientation, set the paper size for printed slides, and edit headers and footers from Page Setup in PowerPoint 2016 for Mac.

In the Slide Size dialog box, select Portrait, then select OK. In the next dialog box, you can select Maximize to take full advantage of the space available, or you can select Ensure Fit to make sure …

If the file size of your presentation is too large, try the following tips to make it more manageable.

To set a custom size, including width, height, slide numbering, and orientation of slides and notes, select Custom Slide Size on the Slide Size menu. To make sure your slides will print the way you want, …

Use Widescreen (16:9) or Standard (4:3) or choose a custom size for your slides.

By editing the slide master for your presentation, you can change the footer formatting (such as font style, size, and color) on all of your slides at one time.