performance-audit

Audit web performance by measuring Core Web Vitals, bundle size, and render performance.

8|Updated Feb 8, 2026
One-click install
npx skills add https://github.com/kensaurus/cursor-kenji --skill performance-audit-kensaurus
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: performance-audit
Source: https://github.com/kensaurus/cursor-kenji/tree/main/skills/performance-audit
Command: npx skills add https://github.com/kensaurus/cursor-kenji --skill performance-audit-kensaurus

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Audit and optimize web performance by systematically measuring Core Web Vitals, bundle size, and runtime render performance.

Core Features & Use Cases

  • Core Web Vitals assessment (LCP, INP, CLS, FCP, TTFB) and recommended optimizations.
  • Bundle and code-splitting analysis to reduce initial load and improve performance.
  • Practical audit workflow with checks for caching, image optimization, asset delivery, and performance budgets.
  • Use cases include pre-release performance audits, diagnosing slow pages, and validating optimization work.

Quick Start

Run a comprehensive performance audit on your app to measure Core Web Vitals, bundle sizes, and render performance.

Frequently Asked Questions about performance-audit

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I audit Core Web Vitals like LCP, INP, and CLS for my web app?

A comprehensive performance audit measures Core Web Vitals, analyzes bundle sizes, and checks runtime render performance to diagnose slow pages. It systematically evaluates caching, image optimization, asset delivery, and hydration performance to validate optimization work.

How can I reduce bundle size and improve code-splitting for initial load performance?

Bundle and code-splitting analysis identifies opportunities to reduce initial load times by optimizing asset delivery. This analysis evaluates your bundle composition against performance budgets to provide actionable optimizations for your web application.

Does the performance audit workflow support pre-release deployments?

The performance audit workflow is applicable to both production applications and pre-release deployments. It enforces systematic checks for configurations, monitoring hooks, and generates reproducible reports to satisfy measurement and documentation requirements.

What is the best way to diagnose slow page render times and hydration performance?

Diagnosing slow render times requires measuring runtime render performance and hydration metrics across your application routes. A practical audit workflow checks caching configurations and image optimization to identify bottlenecks and guide optimizations.

Can I validate optimization work and set performance budgets for my web application?

Validating optimization work involves running a comprehensive performance audit that checks performance budgets, asset delivery, and caching configurations. This ensures your web vital measurements are reproducible and properly documented for ongoing monitoring.