Whenever I try to upload a png with transparent background on twitter , I am getting a white background. I tried to upload different sizes pngs (24x24, 256x256, 512x512),but it didn't help. It appears twitter re-sizes the image & the transparency is lost.
However some other profile pics with transparent background (uploaded in 2011) is working just fine.
Any idea how do I upload a avatar with transparent background?
Edit: I don't really care about bigger pics(73x73). I just want my timeline profile pics(48x48) to stay transparent.