Applies To
PowerPoint for Microsoft 365 PowerPoint for Microsoft 365 for Mac PowerPoint for the web

  1. On the Design tab, select  Slide size button icon. ​​​​​​​Slide Size and choose Custom Slide Size.

  2. Under Slides sized for, select the page size to use. 

Tip: For more info on size, see Change the size of your slides. 

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