This photo is a JPEG image.
PNG stands for Portable Network Graphics. GIF stands for Graphic Interchange Format. And lastly, JPEG stands Joint Photographic Experts Group. PNG are images that let you have an transparent background. GIF is a image that moves a little depending on the image. GIF is better than JPEG when you are doing symbols or icons because GIF has better quality and has smaller file size. But JPEG might be better to use than GIF when you are doing pictures of photographs or gradients because same, JPEG has better quality and has smaller file size. I like GIF because the images move.