(09-21-2017, 03:30 PM)Tonko Wrote: Then, select the fuzzy select tool (The one that looks like a magic wand) and click on the white blackround. After that, press the "Supr" key on your keyboard.
No, no, and no. If you do that, either the text will be pixellated (threshold too big) and you will have a white halo around the text (small threshold). This, because the fuzzy select either completely selects pixels or doesn't select them at all. The text is smooth because its edge pixels are of a color which is a blend of the text color and the white of the background. If you want to keep a smooth border to the text, you have to replace the white by transparency, which is what color-to-alpha does.
In the image below, the results of the Fuzzy+Delete using varoius thresholds (15, 60,100) and at the bottom the Color-2-alpha result, over a contrasting background. Threshold 15 leaves a lot of dirt. This disappears with a bigger threshold, but the letters are made thinner. The bottom is the Color-To-Alpha result.