GIF Image Files
GIF's - are generally a higher quality file format for World Wide   Web documents. However they produce a physically larger file. (more diskspace,   longer download time) There is no compression option for GIF files.
        There are   two unique forms of GIF file, the transperent GIF and the animated GIF. With a   transperent GIF you can nominate a colour to appear transperent, thereby   removing the border or block appearance of an image. An animated GIF is actually   a series of images (much like a cartoon is made up of frames), timed to display   in a particular fashion, giving the perception of movement.
      Here are some   examples of GIF files.

      Standard GIF 300x200 23.9Kb

      Interlaced GIF 199x224 24.5Kb

      Animated GIF 64x64 11.7Kb

      Interlaced GIF 199x224 24.5Kb
