The Web Vitals Test measures Core Web Vitals, including Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). These metrics are crucial for understanding page speed, interactivity, and visual stability, directly impacting user experience and search engine rankings. This tool provides actionable insights to help you address performance bottlenecks, improve load times, and ensure your website delivers a smooth experience across devices.