I am trying to create a logo with a transparnt background for my website, so my logo can sit on top of background images. I have created different file, png, gif, eps all with transparent backgrounds but everytime I upload it to my website builder (wix) it has either a grey or white background. Can someone advise on how I would ahcieve the correct file?
I think the problem is Wix, anyway try to export the logo object to Photoshop and save it as PNG24.
Presuming you are referring to the large grey box, I agree with Gonzalogxg.
If you are referring to what appears to be a white fringe, it should only occur in GIF and only if you have a Matte colour different from the background, but not in PNG and EPS.