- Open your PowerPoint presentation.

- Either insert a new shape or select an existing shape that you want to crop. (In this case we have taken a local picture in the system.)

- Click on the shape to select it. You'll see handles (small squares) around the shape's perimeter.

- When a shape is selected, a new tab called "Format" should appear on the PowerPoint ribbon at the top of the window.

- Within the "Format" tab, find the "Crop" button in the "Size" group. Click on the drop-down arrow next to it.
- From the drop-down menu, select "Crop to Shape."

- The shape you selected will appear around your original shape. Resize and reposition this cropping shape to cover the portion of the original shape you want to keep. Anything outside the cropping shape will be trimmed away.

- Once you've adjusted the cropping shape, click anywhere outside the cropping shape or press the Enter key. This will apply the cropping and trim away the excess parts of the original shape.

- After you're done cropping the shape, make sure to save your PowerPoint presentation to retain the changes you've made.
