I&#x27;m wonder if they&#x27;re cutting out a lot of the rendering that PhantomJS is doing. Not to say that any type of rendering is cheap but I&#x27;m guessing they have a limited version of a JS rendering engine that does just enough to index the page.<p>I bet they&#x27;d also skip on all the FB like buttons and other common social media elements that don&#x27;t impact the content.