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Hour 4. Display Images on a Page > Image Flavors: GIF, JPEG, and PNG

Image Flavors: GIF, JPEG, and PNG

Most new browsers support the two standard image formats and one newer image format. The two standard image formats are called GIF (pronounced either "gif" or "jif") and JPEG (prounounced "J-peg"). The newer format is PNG (pronounced "ping").

  • The GIF format is better for images that have blocks of continuous color, usually drawings.

  • The JPEG format is better for photographic images and images that do not have blocks of continuous color—for example, images that contain a color gradient.

  • The PNG format is a replacement for the GIF format. It supports alpha channels that are useful for transparency. Microsoft Internet Explorer 4.0 and Netscape Navigator 4.0 both display PNGs but have difficulty with alpha channels and some of the more advanced characteristics of this format.


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