Bitmaps are by far the most commonly used image format on web pages. When the images we want to show are photos, that makes sense. But when it comes to illustrations and GUI components, bitmaps are wasteful. Many designers actually do make extensive use of bitmap images directly in user interfaces. Personally I don’t feel this is a good approach, but the blame for it becoming habitual stems from the extensive use and recommendation of Photoshop for interface design. Vector graphics offer numerous...