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 …

On the Design tab, in the Customize group, click Slide Size. Click Custom Slide Size. Change the orientation for the slides to Portrait or Landscape. Note: You can also change the orientation of your …

To show portrait and landscape slides in the same presentation, use the workaround in this article.

Change orientation of whole document To change the orientation of the whole document, select Layout > Orientation. Choose Portrait or Landscape.

This version of PowerPoint has a default size of 16:9 for new presentation, but you can create a different default for yourself. (If you want a different default slide size than what's listed there, select Custom …

From your PowerPoint for the web slide show, click File > Print and then choose the kind of sheets you want to print: Under Orientation, choose the option that matches the orientation of your slides.

By default, in PowerPoint for Microsoft 365 (beginning with version 1810), printed handouts include a slide number below each slide image. You can turn this option off for this presentation by going to …

When PowerPoint is unable to automatically scale your content, it will prompt you with a message. Select Maximize to increase the size of your slide content when you are scaling to a larger slide size.

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 PowerPoint, slide backgrounds span to all edges of your screen. But when you print your presentation, you'll get a white margin around the edges, shown below.