Transparency allows for specific pixels in the image to be empty, which can be useful when placing one image on top of another. PNGs also support transparency, which JPGs do not. Meanwhile, PNGs are lossless, which means they are not compressed. Generally, the higher the quality of the image, the bigger its filesize, so compressing an image can help make it take up less space on your hard drive. When you create a JPG, you can choose how lossy it gets. This means that image compression has removed some of its overall quality. With a JPG, you have a file with lossy quality. However, JPGs (or sometimes JPEGs) are different from PNGs. They contain visual information, usually photographs, drawings, screenshots, or other types of media.