1) On reddit: https://old.reddit.com/r/GIMP/comments/9...shold_fun/
2) The threshold setting of the "By Color select" tool. If you keep it small, the selection selects almost no edge pixels, and the result path is off by one pixel (which is quite visible since it can make small things disappear or instead be inflated)
2) The threshold setting of the "By Color select" tool. If you keep it small, the selection selects almost no edge pixels, and the result path is off by one pixel (which is quite visible since it can make small things disappear or instead be inflated)