We all know that the performance of our websites is important. Faster page loads will improve the overall user experience. Which in turn will result in more revenue. Your site’s page speed will also influence the ranking of your website in search results. But how do we measure the page load of our sites? And how do we fix any performance problems? You can do this by profiling your website. In this talk, I will explain how you can use Blackfire to profile your website and to improve its performance.