Pretty awesome. It even works with port numbers, but only if you use it directly in the URL (entering :3000 into the top right address bar doesnt work). http://responsive.is/localhost:3000
A bookmarklet would be great too
A bookmarklet would be great too
Actually, it's once you're looking at a page in a subdirectory of your own server's doc root, for any URL, not just localhost:PORT#.
Click it to quickly wrap any site in responsive.is.