Testing web applications in an effective way can be super-simple nowadays, thanks to many available tools. When it comes to examining basic issues, Google Lighthouse is one of the best and most popular instruments to do it, so every web developer and website owner should be familiar with it. Especially if it’s available for free, built in WebPageTest, PageSpeed Insights, Chromium based browsers (such as Chrome and Edge) and as an extension for Firefox. So why don’t you try it out on your own? This guide is the quickest way to start!