How to use the Lighthouse tool to diagnose and optimize website performance bottlenecks?

When needing to diagnose and optimize website performance bottlenecks, the Lighthouse tool can be used to generate multi-dimensional reports, enabling the identification of issues through the analysis of core metrics and the implementation of targeted optimizations. How to run: Open the target webpage in the Chrome browser, press F12 to open DevTools, switch to the Lighthouse tab, check detection categories such as "Performance" and "Accessibility", click "Generate report", and the tool will run tests simulating a real user environment. Core metrics: The report includes dimensions such as performance scores (e.g., user experience metrics like LCP, FID, CLS), accessibility, and best practices. Items marked in red/yellow indicate issues that need optimization, such as uncompressed image resources, JavaScript blocking rendering, and excessively long task execution times. Optimization directions: Based on the report recommendations, you can compress image/JS/CSS files, enable browser caching, reduce third-party script loading, optimize the critical rendering path, and prioritize resolving high-priority issues affecting user experience (e.g., LCP timeouts). It is recommended to use Lighthouse for testing regularly (e.g., weekly) and verify optimization results with Real User Monitoring (RUM) data to continuously improve website loading speed and user retention rate.