The Lighthouse Performance Score should not be treated as a key performance indicator (KPI) for several reasons. While it provides some insight, it has limitations that make focusing on individual metrics more valuable. Here's why: Firstly, the performance score is derived from a weighted average of performance metrics within Lighthouse. Currently, metrics like Total Blocking Time (TBT), Cumulative Layout Shift (CLS), and Largest Contentful Paint (LCP) carry more weight, while metrics like First Contentful Paint (FCP) or Speed Index have less weight. This means that a higher score may not accurately reflect the performance of specific metrics. Consequently, fast websites could have low scores, and slow websites could have high scores.
Is Lighthouse performance score accurate?
Is Lighthouse performance score accurate?
Is Lighthouse performance score accurate?
The Lighthouse Performance Score should not be treated as a key performance indicator (KPI) for several reasons. While it provides some insight, it has limitations that make focusing on individual metrics more valuable. Here's why: Firstly, the performance score is derived from a weighted average of performance metrics within Lighthouse. Currently, metrics like Total Blocking Time (TBT), Cumulative Layout Shift (CLS), and Largest Contentful Paint (LCP) carry more weight, while metrics like First Contentful Paint (FCP) or Speed Index have less weight. This means that a higher score may not accurately reflect the performance of specific metrics. Consequently, fast websites could have low scores, and slow websites could have high scores.