Re: Recent Message

Dave Raggett (
Fri, 17 Feb 95 14:02:55 GMT

> "What did we do?" Unisys sat back while the world incorporated the GIF file
> format, and therefore the LZW compression algoithm, into every major graphics

With hindsight, we will all probably be grateful to Unisys, as we can
now look forward to replacing GIF with PNG which is a truly public domain
lossless graphics format and provides a number of very important enhancements
over GIF, e.g. gamma correction, true color, improved interlacing, and
improved compression for smoothly varing images. The final spec will also
include direct support for image maps.

For more info on PNG look at

-- Dave Raggett <> tel: +44 117 922 8046 fax: +44 117 922 8924
Hewlett Packard Laboratories, Filton Road, Bristol BS12 6QZ, United Kingdom