Core Web Vitals Optimizer

About

The Core Web Vitals skill empowers Claude to analyze, track, and optimize the essential metrics Google uses to assess user experience: Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS). By providing actionable attribution data and production-ready implementation patterns, this skill helps developers identify specific bottlenecks—such as unoptimized hero images or long JavaScript tasks—and implement robust, route-based tracking to ensure high-performance web applications.

Key Features

• Route-based performance monitoring and aggregation
• Production-ready implementation templates for modern frameworks
• Detection and resolution of common performance anti-patterns
• Actionable attribution tracking for specific element debugging
• 0 GitHub stars
• Comprehensive measurement of LCP, INP, and CLS metrics

Use Cases

• Implementing site-wide performance monitoring and alerting systems
• Optimizing web applications for Google's search ranking signals
• Debugging slow page loads and unexpected visual layout shifts