RE: FN-FORUM: PNG Background Image IE6

date posted 25th May 2007 01:10

Peter wrote:
> By the way I have also come across an issue using png in Safari as it=20
> seems that it alone uses the correct colour profile sRGB so it make =
the=20
> colours washed out.

Ah yeah .. Forgot to mention that one! Some browsers respect the gamma =
level
in PNGs, others ignore it. To ensure PNGs display consistently across
browsers (and perhaps more importantly, consistent with graphics in =
other
formats on the same page), you'll need to strip out the gamma =
information:

PNG Colors in Internet Explorer
http://www.sitepoint.com/newsletter/viewissue.php?id=3D3&issue=3D153#7

TweakPNG tool for removing gamma info from PNGs
http://entropymine.com/jason/tweakpng/

This is particularly important if, for example, a PNG makes up part of =
the
page and is meant to be the same colour/tone as another area (such as a
coloured or GIF background). The article above gives a good example of =
the
mismatch that can occur, and I've run into the problem several times =
myself
- much head scratching!

No wonder poor old PNGs have struggled to gain popularity, despite being
superior in almost every way to older formats!

Ben

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Ben Johnson, Neogic Web Solutions
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