Images are pictures.
Images on a Web page can give it that little bit of zing it needs to make it a really fantastic Web page. Well, the browser actually reads the tag for the image and that tag tells the browser where the file of the image is located. The browser simply opens that file and displays the image. If a browser can't handle images, then the graphics would have to be viewed via some other source other than the browser in another window. Obviously, inline images are preferred.