On 8/22/07, Amit Ramon <[EMAIL PROTECTED]> wrote:
> Hello,
> I'm trying to create a logo that consists of some text over transparent
> background. I want it to be in GIF format. I create the text with the text
> tool. Now in gimp, it looks great. However, when I go and export it to a GIF,
> the fonts loose quality.
> Here is my understanding of what happen:
> The fonts are anti-aliased using transparency (alpha).
> Then, before I can save it as GIF, I need to change the mode to indexed, which
> creates a color map.
> The color map created actually contains a single color (where in gif it could
> contain as much as 256 different colors).
> Since there is only one color, fonts cannot be anti-aliased and that's why
> they look so bad.
> I think that since the initial anti-aliasing is done using alpha, all pixels
> actually have the same color (but different alpha), and that's why the color
> map contains only a single color.
> Technically, as far as I understand, there should be no problem to have a good
> anti-aliased fonts in a gif file. The problem is with the very specific
> method I (or gimp?) creates the gif.
GIF doesn't support 8bit alpha, only binary (fully solid or fully
transparent) alpha.
If you want a font that is rendered for a specific background color,
set the background color to the one you want, and use

PNG supports 8bit alpha, so if you do not require animation, consider
using PNG instead.
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