In our client's website, favicon.ico file has several sizes from 8x8 to 32x32. I expect the 16x16 to show in browser tab, but instead it shows 8x8 icon in white frame. Why does this happen and what workarounds are there?
Favicon should be 16x16 or 32x32 at 8-bit or 24-bit, according to http://en.wikipedia.org/wiki/Favicon#Standardization_and_implementation
But in my experience, try to get the favicon to have file size 1.12KB like Google, StackOverflow etc :P