| interlaced GIF
A feature of the GIF89a graphics
standard, an interlaced GIF displays images in two passes of alternating
lines instead of loading them one line at a time. Depending on which
graphics viewer or Web browser is being used, interlaced GIFs may produce
a "venetian blind" effect or simply a blurry or blocky image that
gradually sharpens. Pages using interlaced GIFs let people see at least
the outline of an image sooner; thus the pages often appear to load faster
than those with noninterlaced graphics. If a browser doesn't support
interlaced images, an image will simply appear as a normal (noninterlaced)
GIF. |