How do I Change the Slide Size in PowerPoint?

Changing the slide size in PowerPoint is essential to ensure your presentation displays correctly for your audience. In this step-by-step guide, we will show you how to change the slide size in PowerPoint.

Step 1: Open the PowerPoint Presentation:

  • Launch PowerPoint on your computer.
  • Open the presentation you want to change the slide size.

Step 2: Go to the Design Tab:

  • Click on the “Design” tab located in the PowerPoint ribbon.

Step 3: Click on Slide Size:

  • In the “Design” tab, click on “Slide Size” located in the “Customize” group.
  • Choose “Custom Slide Size” located at the bottom of the dropdown menu.

Step 4: Choose the Slide Size:

  • A “Slide Size” dialog box will appear.
  • Choose your desired slide size from the “Slides sized for” dropdown menu.
  • Alternatively, you can customize your slide size by selecting “Custom” and entering the desired dimensions.

Step 5: Choose the Orientation:

  • Choose the orientation you want by selecting the “Orientation” option.
  • You can choose from “Portrait” or “Landscape.”

Step 6: Preview the Slide Size:

  • After selecting your desired slide size and orientation, click on the “OK” button.
  • A message will appear, asking if you want to maximize the size of your content to the new slide size.
  • Choose “Maximize” to preview how your content will appear in the new slide size.

Step 7: Scale the Slide Content:

  • If your content does not fit within the new slide size, you may need to scale it to fit.
  • Go to the “Design” tab and click “Slide Size” again.
  • Choose “Custom Slide Size” and select the “Scaled” option.
  • Enter the percentage you want to scale the content by and click “OK.”

Step 8: Save the Presentation:

  • After changing the slide size, save your presentation to preserve your changes.


Changing the slide size in PowerPoint is crucial to make sure your presentation appears correctly on different devices and screens. By following these step-by-step instructions, you can effortlessly change the slide size in PowerPoint, adjust the orientation, and scale your content to fit. This way, you can ensure a seamless and professional presentation for your audience.

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