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Google Page Speed tools exist and, probably, wonder how to use them to improve your website. We gathered the most important facts to help you understand the topic and use it to your advantage. Lab data is helpful for debugging the performance issues and deeper visibility into the UX. The pros are capturing the real-world user experience and enabling correlations to your key performance indicators. The cons are some restrictions on the set of metrics and limited debugging capabilities. The following performance tools will show the detailed opportunities you get by using them.