Google PageSpeed Insights is a free tool developed by Google that helps website owners and developers assess the performance of their web pages and provides actionable recommendations to improve speed and user experience. It evaluates both desktop and mobile versions of a webpage, providing a score based on how well the page adheres to Google’s performance best practices. The tool measures various metrics, including Core Web Vitals like Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS), which are essential factors in determining a site's user experience and search ranking.
In addition to performance scores, PageSpeed Insights provides detailed insights into issues affecting page load times, such as image optimization, render-blocking resources, and server response times. It integrates lab data from Lighthouse, a web performance tool, and field data from the Chrome User Experience Report (CrUX), offering a comprehensive view of a webpage’s speed and usability. Developers and SEO professionals use PageSpeed Insights to identify bottlenecks and improve their website's overall performance for better user engagement and search engine optimization.
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