Check it out on the live site! It displays visitors' screen sizes in real-time.
Inspired by the visualization on Brad Frost's This Is Responsive.
Use this on your own site
There's a route called
/screen which takes two params:
wis the width
his the height
You can measure these on the client-side by checking
window.innerHeight. Then just GET the URL and supply the two dimensions. The server handles the rest!