Differences between version 5 and predecessor to the previous major change of PNG.
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| Newer page: | version 5 | Last edited on Thursday, June 12, 2003 8:01:29 pm | by AristotlePagaltzis | Revert |
| Older page: | version 2 | Last edited on Thursday, June 5, 2003 12:13:41 am | by PerryLorier | Revert |
@@ -1,5 +1 @@
-Short
for Portable Network Graphics, and pronounced ping
, a new bit-mapped
graphics format similar to GIF
. In fact, PNG was
approved as a standard
by the World Wide Web consortium to replace GIF because
GIF uses
a patented data
compression algorithm called LZW. In contrast, PNG is completely
patent- and license-
free. The most recent
versions of NetscapeNavigator
and Microsoft InternetExplorer now
support PNG
-
-PNG is an [Acronym]
-
-InternetExplorer
doesn't support alpha channels. Rumours include
that the IE engine is pretty
old an
out of date and can't
support it
without lots of hidious
hacks.
Amusingly, while Microsoft can't make these hidious
hacks, we can. Here's a site that explains how to properly render PNG's in IE with alpha transparency:
http://redvip.homelinux.net/varios/explorer-png-en.html
+PNG [[pronounced "ping"] is the [Acronym]
for Portable Network Graphics, a new, losslessly compressed bitmapped
graphics format. It is
approved by the [
World Wide Web consortium|W3C] as the successor of the [
GIF] format. The latter depends on
a compression algorithm called LZW which was patented by [Unisys] long ago
. In contrast, PNG relies on the
patent free LZSS algorithm for compression and is completely unencumbered with licensing fees
. Recent
versions of [Mozilla], [Opera],
and [
Microsoft]
InternetExplorer support PNG, although the latter
doesn't support alpha channels. (Rumour has it
that the IE engine is too
old and
out of date to
support transparency
without lots of hideous
hacks. Amusingly, while Microsoft can't make these hideous
hacks, [
we can|
http://redvip.homelinux.net/varios/explorer-png-en.html].)
