web-performance-audit

What it does

This skill enables AI agents to analyze website loading speeds and identify specific bottlenecks affecting user experience. It provides actionable insights into performance metrics such as First Contentful Paint, Time to Interactive, and Largest Contentful Paint to help optimize frontend delivery.

When to use it

• Before launching a new marketing landing page to ensure fast load times on mobile networks.
• When Core Web Vitals scores drop below recommended thresholds in analytics dashboards.
• During the debugging phase of slow image or script rendering issues.
• To establish baseline performance metrics for regression testing after code deployments.

Key capabilities

• Analyzes critical path rendering and resource loading delays.
• Identifies render-blocking resources and large asset sizes.
• Evaluates server response times and network efficiency.
• Generates specific recommendations for reducing latency and improving throughput.

Example prompts

• "Audit the performance of my production homepage and list the top three reasons it's loading slowly."
• "Analyze this URL for Core Web Vitals compliance and suggest fixes for poor mobile scores."
• "Review the network waterfall for [domain] and identify any render-blocking JavaScript files."

Tips & gotchas

Ensure the target website is publicly accessible, as audit tools cannot analyze sites behind authentication walls without specific credentials. For accurate results, run the audit from a location geographically close to your primary user base to reflect real-world latency conditions.