Within the Picture Layout dropdown menu, select one of the following two SmartArt layouts depending on what shape you want your pictures to crop to: With your images selected, navigate to the Picture Format tab and open the Picture Layout dropdown menu. PowerPoint can crop and resize them all at the same time. The number of pictures you have is irrelevant. While holding Shift or clicking and dragging with your mouse, select all the images on your slide that you want to crop into a standardized size for your presentation.
