#Speed testing

Speed testing is measuring how fast a website loads with tools such as PageSpeed Insights, Lighthouse and WebPageTest. Articles tagged here explain what each tool measures and why results differ between runs. They show how to read waterfalls, scores and Core Web Vitals reports. You will learn the difference between lab tests and real-user field data. Each guide helps you test in a way that leads to the right fix. Reliable measurement is the first step of any speed project.