PNG

The Portable Network Graphics (or PNG) file format features lossless compression, alpha channels, gamma correction and two-dimensional interlacing. PNGs (generally) compress better than GIFs by 5 - 25%. PNG supports 48-bit truecolor and 16-bit grayscale. Just remember that using truecolor images come at a cost of greatly increased file size.

Recommended reading: everything at the PNG Home Site.

Comment on PNG

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Re: PNG by rozallin (Curate) on Dec 18, 2002 at 21:37 UTC
Unfortunately, PNGs are still not universally supported, and thus you run the risk that some users will not be able to see inline PNGs. And even the browsers that do support PNGs don't fully support all the nifty, useful features. Versions 4 and Up of the "Big Two" (except IE 4 for the Macintosh) can view PNG images but support for advanced features such as gamma correction and alpha transparency remain broken and buggy. -- Rozallin J. Thompson The Webmistress who doesn't hesitate to use strict;	[reply]

Replies are listed 'Best First'.

Re: PNG
by rozallin (Curate) on Dec 18, 2002 at 21:37 UTC

Versions 4 and Up of the "Big Two" (except IE 4 for the Macintosh) can view PNG images but support for advanced features such as gamma correction and alpha transparency remain broken and buggy.

-- Rozallin J. Thompson
The Webmistress who doesn't hesitate to use strict;

[reply]