Onion-Location

Onion-Location is a non-standard HTTP header that websites can use to advertise their onion counterpart. If the website that you are visiting has an onion site available, a purple suggestion pill will prompt at the URL bar in Tor Browser displaying ".onion available". 当你点击 “.onion 可用”时，该网站会重新加载并重新定向至对应的洋葱服务网站。