When a website is visited, the browser needs to request media from outside sources. This project serves a 1x1 transparent pixel image at a specific route, such that when the browser requests the image, the server can log the request and track the view. By using a unique id in the route, the server can track views for different pages:
Embed <img src="https://pixel.flatypus.me/[id]"> to start tracking that id. You could also embed  in a .md to track on markdown pages, such as this one.
To view statistics, go to https://view.flatypus.me/[id] to view stats.
But how would you know who or what website is requesting the image? Simple: on each request, it includes a Referer header, which tells the server where the request is coming from. I log that site, and allows you to sort the stats by the route.
You could even go a step further! By specifically adding <img src="https://pixel.flatypus.me/[id]" referrerpolicy="unsafe-url"> to your page, you'll also be able to get the specific full URL, including sorting by paths, of the page that requested the image.
