Lea Verou had a dang genius idea to use an emoji as a favicon. The idea only recently possible as browsers have started supporting SVG for favicons. Chuck an emoji inside an SVG <text> element and use that as the favicon. Here’s the one-liner in use: <link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22