Yes, try using the slider to step through the animation. A progressive jpeg will load the whole image in a very low-resolution state and will progressively enha

Yes, try using the slider to step through the animation. A progressive jpeg will load the whole image in a very low-resolution state and will progressively enhance the quality as it loads. A regular jpeg will just load vertically. You can see that at 50% downloaded the progressive image of Kermit looks good, certainly good enough for you to tell what the entire image is and be able to see some details. The non-progressive jpeg has half of it's image rendered, the other half still downloading.