A major problem with using images on Web sites is thatimages take much longer to load than text. So you haveto choose your image formats carefully.

Two image formats are most commonly used andsupported on the Internet: GIF and JPEG. These formats use different methods to reduce the sizeof an image. Normally you should use JPEG images forphotographs and other images that contain significantcolor variation. GIF images are well suited for imagesthat contain sharp lines such as icons, buttons, orWeb site banners.