1. First open ps, click and select the "crop" icon button on the left.
2. Then move the left mouse button to crop the picture in the new interface.
3. After cutting in the new interface, click and select the Export button in the File menu.
4. Then click and select the "Save as web Format" button in the new interface.
5. Finally, click and select "GIF format" on this page, and then click the "Save" button.