From BrWiki
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The GIMP)
The GIMP, the GNU Image Manipulation Program, is a free, open-source image editor with much the same capabilities as commercial image editors. It runs on most popular operating systems.
[edit] Fixing transparency for IE6
How to set the background color in The GIMP
One noteworthy feature is the ability to set the "background color" element in PNG images. Internet Explorer 6 does not handle PNG transparency, and will always show this color rather than what's actually below the image, so setting this color to the expected background color (#DFDACE for the default BRWiki skin) will circumvent ugly border displays in most cases.
- Select #DFDACE as the background brush color
- When saving the PNG, make sure to check "Save background color"
- Done.
[edit] Reducing PNG file size
Using Tools → Colors → Posterize reduces the number of unique colors in the picture. Levels 25--30 reduces it to a few thousand colors without ruining pictures visually, and works wonders in PNG compression - expect files to at least halve in size and often more -- at least for full-color pictures. Icons will likely not benefit a lot from it as they're fairly simple to begin with.
[edit] External links
See Also: PNG, JPG, BRWiki:Image guidelines
