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PageSpeed Insights is a free performance tool that analyzes the content of a given webpage and provides page speed scores for both the mobile and desktop versions of the page. The tool also identifies opportunities for optimization and makes specific recommendations for improvement.
With PageSpeed Insights, site owners can see in detail how Google understands the technical performance of their pages. Some of the metrics the tool relies on to calculate PSI scores, like Core Web Vitals, are a part of Google’s ranking algorithm.
All of that is to say that PSI scores are a good indication of whether or not your pages are meeting Google’s speed and performance standards. There is a strong correlation between higher scores and better keyword rankings.
For mobile users, page load speed is considered the most important factor, even more so than quickly finding what they are looking for or the aesthetic quality of the page. Improving site speed is non-negotiable to any search engine optimization and conversion optimization strategy.
