Fix image upload adding outlines to transparent images

[anon81993163]

Something about images being scaled causing them to fill in “artifacts” with only transparent pixels.

When scaling images, do not use colors from completely transparent pixels

As a Roblox developer, it is currently too hard to make images that scale well. When Roblox scales images, it considers the color of transparent pixels when it calculates the color of each pixel in the resized image. This means that if your completely transparent background happens to be black, it will give your image black edges. This is true of any color. [image] (The first one has black transparent pixels, the second one has white transparent pixels, the third has red transparent pixels) T…

On another topic, there’s also a different fix.

Tutorial: How to fix the dark outline artifacting around your image guis

Often times, you’ll upload a decal with a transparent portion, and when you go to use it, you’ll see something like this: [blob.jpg] An outline appears out of nowhere to make your paint.net editing skills look bad. You know the image should really look like this: [blob.jpg] This isn’t a problem with the image, it’s a problem with the way ROBLOX samples their images. If the size of the image is native and the rotation is 0, you will see no border, but if you want to have rotations and diffe…

The outlines you mentioned might be compression artifacts.