To do Alt + H + 8 + L on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by H, 8, then L.
Command: lowercase
This is how to do Alt + H + 8 + L on Mac in PowerPoint with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with PowerPoint.
Alt + H + 8 + L converts all selected text to lowercase letters. Every character becomes a small letter, useful for fixing accidentally capitalized text or creating a specific visual style.