The Largest Contentful Paint Is a New Metric

Speed index is a measure for legwen, might i want to inject somejoba script ay, all the sub resources on the pages are loaded. And we had thought that this was like a just fine proxy for a web page performance. But what pat found out when he ran this test was that sometimes our changes would make on load faster, they wold make speed index slower. So again, we see this thing, we've got a bit of an artificial metric, and we can make changes that make the real use of experience worse when the metric gets better.