Unrelated, but I would like to note that you shouldn't use subpixel anti-aliasing in text in images, especially ones that will be shown by a web-browser. You never know whether the user's screen is rotated or not; if it has three subpixels per pixel, or if it's pentile or similar; or if it is high-DPI and therefore the image is zoomed; and even if none of those are the case, a lot of people dislike the coloured fringes.