Quick summary
PowerPoint's Custom Slide Size feature lets you set exact poster dimensions — such as 36×24 inches — directly from the Design tab. This step-by-step walkthrough shows you how to configure and confirm your poster size settings in just a few clicks.
Steps
- Go to the Design tab in PowerPoint.
- Click the Slide Size button on the Design ribbon.
- Select Custom Slide Size from the dropdown menu.
- Set the Width to 36 inches and the Height to 24 inches in the dialog box.
- Click OK to apply the custom poster dimensions.
- Choose your preferred Scaling Option when prompted to finalize the layout.
