How do you make an object smaller on game maker?

To make an object smaller in GameMaker, you can adjust its scale using the image_xscale and image_yscale properties. Set these properties to a value less than 1 to shrink the object proportionally. For example, image_xscale = 0.5 and image_yscale = 0.5 will reduce the object's size to half of its original dimensions. You can also use transformations in the object's draw event for more control over its appearance.