Core Web Vitals optimization Targeted optimization for the three Core Web Vitals using field data to identify user impact and browser traces to diagnose causes. Measure before optimizing When a runnable URL is available, read the performance measurement workflow. Prefer this sequence: 1. Check page-level CrUX p75 data, with a clearly labeled origin fallback when page data is unavailable. 2. Record a browser performance trace under stated conditions. With Chrome DevTools MCP, trace summaries can include CrUX alongside the observed lab metrics. 3. Analyze only the insights associated with the f…