This url can be accessed by going to http://tiny.cc/perflab
- Runtime Perf: https://developers.google.com/web/tools/chrome-devtools/rendering-tools/
- Preloading: https://developer.mozilla.org/en-US/docs/Web/HTML/Preloading_content
blockDomainsExcept www.lullabot.com
navigate https://www.lullabot.com