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interlaced GIF

   Also found in: Wikipedia 0.01 sec.
interlaced GIF
A GIF image that gradually comes into focus. Instead of displaying a line at a time from top to bottom, lines at various intervals throughout the frame are displayed until all the lines are filled in. Most popular for Web graphics with slow dial-up service, the subject of the image can be recognized faster than with a regular GIF. In addition, it is also entertaining to watch the image come into focus. With high-speed Internet access, the interlaced GIF offers no advantage as both interlaced and regular GIFs display instantaneously.

It Takes Four Passes
Lines come on screen in four passes as follows: Pass 1 - starting at row 0, display every eighth row; Pass 2 - starting at row 4, display every eighth row; Pass 3 - starting at row 2, display every fourth row; Pass 4 - starting at row 1, display every other row. See progressive JPEG, GIF and interlace.


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Users can also create animated interlaced GIF files for easy posting on Web pages or to send with emails.
Users can also map their QuarkXPress style sheets to HTML styles to preserve text formats, and select image conversion options such as interlaced GIF and JPEG.
 
 
 
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