1. Using slicing tools is relatively simple and quick. Cut out the icons to be cut one by one, save them in web format, and a picture file will appear when exporting. 2. Cut the small icon you want by clipping (you can remember the length and width attribute parameters of the first clipping, so that you can set the clipping attribute for the next icon when using clipping, so that the clipping size is the same) and then save it. Then return to the original image (click "Open" in the first step of history) to continue cropping the next icon, save the cropping file, and then continue to the next icon-.