To do Alt + J + P + X on Mac in PowerPoint, download and install Accelerator Keys, then press Option, followed by J, P, X.
Command: Artistic Effects
This is how to do Alt + J + P + X 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 + J + P + X opens the Artistic Effects gallery in PowerPoint. This allows you to apply creative visual effects like pencil sketch, blur, cement, and other artistic filters to your pictures.