Here's another tip:
You'll find that if you convery your images to the 8bit palette that trying to use that defringe plugin on them will make them big again. If you're gonna do that you might as well save as 24bit in web image guru.
But if you need your image to be 8bit and get rid of white fringes, then click the second tab in PNG8 mode, where you will see a "background" option. Use Origin unfortunately does not seem to do anyhting or do what defringe does, but you can set the background to any color you want and that will be what the 0 alpha pixels will use. So with this you'll be able to significantly reduce or completely hide fringing effects, though for difficult images and backgrounds you might still be stuck with 24bit and defringe.
You'll find that if you convery your images to the 8bit palette that trying to use that defringe plugin on them will make them big again. If you're gonna do that you might as well save as 24bit in web image guru.
But if you need your image to be 8bit and get rid of white fringes, then click the second tab in PNG8 mode, where you will see a "background" option. Use Origin unfortunately does not seem to do anyhting or do what defringe does, but you can set the background to any color you want and that will be what the 0 alpha pixels will use. So with this you'll be able to significantly reduce or completely hide fringing effects, though for difficult images and backgrounds you might still be stuck with 24bit and defringe.