bookmarklet code for displaying basic page performance data

bookmarklet-code-page-performance.js

javascript:(function() {
var perfData = window.performance.timing; 
var pageLoadTime = perfData.loadEventEnd - perfData.navigationStart;
var pageRenderTime = perfData.domComplete - perfData.domLoading;
alert("Load time of this page is: " + pageLoadTime + " milliseconds\n" + "Render time of this page is: " + pageRenderTime + " milli-seconds")
})();