Meet Squirrel, the Image That’s Also a Webpage
Wrap your mind around this: Squirrel is a single file that renders as both HTML and a JPEG image. It’s a webpage. It’s an image. It’s Squirrel. If that doesn’t make your brain explode, the HTML version contains an
img element that points to … you guessed it, itself. Recursion FTW!
To see how it works, view source on the HTML page.