This site renders a random image from a given list every time you load it.
Try it yourself, reload the page!
But the main feature of his site is the API that lets you render a random image (almost) anywhere on the web.
You can use this API like this:
MARKDOWN:

HTML:
<img alt="Random image" src="https://random-image-pepebigotes.vercel.app/api/random-image">
readme.md
files, including the one from your profile: