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Using GIMP for editing Indexed ImagesUsing GIMP for editing Indexed Images
Submitted by Benjamin Melançon on April 15, 2007 - 8:19am
Problem: Gradient tool won't work
GIMP remove index channel
GIMP remove indexing
GIMP indexed channel
Some very commonly used types of files (including GIF and PNG) produce indexed images when they are opened in GIMP. Many of GIMP's tools don't work very well on indexed images–and many filters don't work at all–because of the limited number of colors available. Because of this, it is usually best to convert an image to RGB mode before working on it. If necessary, you can convert it back to indexed mode when you are ready to save it
GIMP makes it easy to convert from one image type to another, using the Mode command in the Image menu. Some types of conversions, of course (RGB to grayscale or indexed, for example) lose information that cannot be regained by converting back in the other direction.
http://docs.gimp.org/en/gimp-images-in.html
Some for blur, and probably anything else you want to do with your image. This is really annoying. Keywords "Blur won't work in Gimp, font smoothing"
Problem: Gradient tool won't work
GIMP remove index channel
GIMP remove indexing
GIMP indexed channel
Some very commonly used types of files (including GIF and PNG) produce indexed images when they are opened in GIMP. Many of GIMP's tools don't work very well on indexed images–and many filters don't work at all–because of the limited number of colors available. Because of this, it is usually best to convert an image to RGB mode before working on it. If necessary, you can convert it back to indexed mode when you are ready to save it
GIMP makes it easy to convert from one image type to another, using the Mode command in the Image menu. Some types of conversions, of course (RGB to grayscale or indexed, for example) lose information that cannot be regained by converting back in the other direction.
http://docs.gimp.org/en/gimp-images-in.html
Some for blur, and probably anything else you want to do with your image. This is really annoying. Keywords "Blur won't work in Gimp, font smoothing"
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