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Hour 7. Displaying Images > Exploring Image Flavors: GIF, JPEG, and PNG

Exploring Image Flavors: GIF, JPEG, and PNG

All browsers support the two standard image formats: GIF (pronounced either “gif” or “jif”) and JPEG (pronounced “j-peg”). There is also a newer format, the portable network graphics (PNG—pronounced “ping”) format. Here's a little more information about these three formats:

  • GIF— This format is best for images that have blocks of continuous color, usually drawings.

  • JPEG— This format is best for photographic images and images that do not have blocks of continuous color—for example, images that contain color gradients.

  • PNG— This format is a replacement for the GIF format. It supports alpha channels that are useful for transparency. Although PNG is not as popular as the other two formats, its popularity is growing. This is the Macromedia Fireworks native file format. If you need to be compatible with all the browser versions, including old browsers, you will want to avoid using PNGs.


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