Compare these three common graphic file formats for Web page images: Joint Photographic Experts Group, Portable Network Graphics, and Graphic Interchange Format.

What will be an ideal response?

.jpg (Joint Photographic Experts Group):
Pixel-based; a Web standard. Can set image quality in pixels per inch (ppi), which affects file size. Supports millions of colors. Use for full-color images, such as photographs or those with lifelike artwork. This format is a good choice when targeting mobile devices.

.png (Portable Network Graphics):
Can be compressed for storage and quicker download, without loss of picture quality. Supports variable levels of transparency and control of image brightness on different computers. Used for small graphics, such as bullets and banners, as well as for complex photographic images. This format is also a good choice for targeting mobile devices. Not all browsers support this file format.

.gif (Graphics Interchange Format):
Limited to 256 colors. Low color quality and limited detail make them unsuitable for printing. Small file size means faster transmission. Suitable for images with only a few colors, such as cartoons, simple illustrations, icons, buttons, and horizontal rules. This format is used for transparent images.