How to disable auto resize of fonts within body text in PowerPoint

By default, PowerPoint will automatically adjust the font size of your body text on each slide depending on the amount of text. This can create inconsistent font sizes for each slide if one slide’s body text only has a few lines of text and another slide’s body text has much more. To disable this feature:

  1. On the Tools menu, click AutoCorrect Options.
  2. Click the AutoFormat As You Type tab.
  3. Under Apply as you type, select or clear the AutoFit body text to placeholder check box.