Recommendations and usage methods for Core Web Vitals monitoring tools?
When monitoring Core Web Vitals metrics, common tools include Google PageSpeed Insights, Lighthouse, and Chrome User Experience Report (CrUX). When using these tools, focus on the three core metrics: LCP (Largest Contentful Paint), FID (First Input Delay), and CLS (Cumulative Layout Shift). Tool Recommendations: - Google PageSpeed Insights: Suitable for quickly testing single-page performance. Enter a URL to generate a report with Core Web Vitals scores and optimization suggestions. - Lighthouse: Can be run via Chrome DevTools or command line, providing detailed performance analysis, including Core Web Vitals sub-item data and technical optimization directions. - Chrome User Experience Report (CrUX): Based on real user data, reflecting metric performance during actual visits, suitable for understanding real user experience. Usage Method: 1. Select a tool: Use PageSpeed Insights for quick single-page testing, Lighthouse for in-depth technical analysis, and CrUX for reference of real user data. 2. Analyze metrics: Focus on the scores and influencing factors (such as unoptimized resources, long tasks) of LCP (target <2.5 seconds), FID (target <100 milliseconds), and CLS (target <0.1). 3. Optimization follow-up: Adjust for issues in the report (such as compressing images, reducing main thread blocking), and retest regularly to verify effectiveness. It is recommended to use Lighthouse to test key pages weekly, combine CrUX data to confirm whether optimization improves real user experience, and continuously monitor metric changes to maintain website performance.
