How does Chrome's “Request Desktop Site” option work?

Question

For iOS google chrome, when a user hits the \"Request desktop site\" button what does the browser do to try to bring up a desktop site? I imagine some sort of header on the

Answer 1

Just wanted to point out that Chrome now not only changes the User-Agent but also ignores the original viewport meta tag if you "Request Desktop Site". Thus it won't be necessary to sniff the User-Agent anymore and you can rely on the viewport change as most responsive sites will automatically do. See this Change for further reference.