Photoshop is a powerful image editor that can be used to change the brightness of images. There are a few ways to do this, but the most common way is to use the Brightness slider. To change the brightness of an image, you need to first select the image you want to change it to and then use the Brightness slider. The Brightness slider can be found in the Image menu and it can be changed by moving the slider left or right. The Brightness slider is important because it affects how bright an image looks.