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web-performance-optimization - Optimize website and web application performance

Optimize loading speed, Core Web Vitals, bundle size, caching strategies, and runtime performance.

Tags

Updated: 2026-10-01
web performanceCore Web VitalsLighthousebundle optimizationimage optimizationcachingruntime performance

Capabilities

Measure performance metricsRun Lighthouse auditsAnalyze performance bottlenecksOptimize critical rendering paths

Typical Inputs

Website or application source codePerformance audit dataJavaScript bundles

Typical Outputs

Performance audit resultsOptimization recommendationsCode and configuration changes

What this skill does

  • Measure performance metrics
  • Run Lighthouse audits
  • Analyze performance bottlenecks
  • Optimize critical rendering paths
  • Reduce JavaScript bundle size
  • Optimize images and assets
  • Implement caching strategies
  • Apply lazy loading
  • Verify optimization results

Inputs

  • Website or application source code
  • Performance audit data
  • JavaScript bundles
  • Images and static assets
  • Network waterfall data
  • Caching configuration
  • Target devices and networks

Outputs

  • Performance audit results
  • Optimization recommendations
  • Code and configuration changes
  • Before-and-after metrics
  • Bundle analysis results

Requirements

    Source

    • Spec: SKILL.md

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