png transparency issues

maybe i shouldnt post this in this forum, but its kinda related to game development

i have a png file with a (what i thought at first) transparent background

when i open the file in Illustrator the background is light blue

whats up with that???

Your PNG image is an indexed transparent image.
Some image editors don’t display the transparent color, so it shows the color indexed in the palette of the image.

simple as that hah?

thank you for your answer…