Economy and Image Formats . . .
coiin at rcn.com
Sat Nov 1 08:30:40 CDT 2008
On Nov 1, 2008, at 9:14 AM, Richmond Mathewson wrote:
> I have never had a problem with GIF images on Ubuntu, and so really
> don't see why using PNG format would be a tremendous advantage.
GIFs are up to 256 colors, and you'll get a dither of colors if the
original image uses more colors than that. PNG can be 8 bit or 24 bit.
How much compression you get will depend on the size of large flat
colored areas, it's not like JPEG where the quality of the image is
lowered to get smaller sizes, with PNG it's going to be a particular
So, you would use PNGs if having the picture looking good is the most
important thing, or if the image has alpha transparencies in it (not
just transparent or not transparent as with GIF, but degrees of
Depending on the nature of the image, JPEG may well be a better option
than either PNG or GIF.
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