The choice of the logo of ObviousIdea is showing his limit in extreme low resolution.
Using this online web site to create a favicon.ico from a jpeg :
This tool can create a favicon.ico and embed also another icon in 32×32 pixels. unfornutly, it doesn’t handle the aspect ratio padding, and it will stretch whatever you submit which is not square format
Check out the result in the little icon of the web url, depending on your browser.