performance-profiling

Automate Lighthouse audits and bundle analysis for web performance profiling.

1|Updated Sep 25, 2025
One-click install
npx skills add https://github.com/arroschaves/brandaocontador-site --skill performance-profiling-arroschaves
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: performance-profiling
Source: https://github.com/arroschaves/brandaocontador-site/tree/main/.agent/skills/performance-profiling
Command: npx skills add https://github.com/arroschaves/brandaocontador-site --skill performance-profiling-arroschaves

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

This Skill addresses the critical need to identify and resolve performance bottlenecks in web applications, ensuring faster load times, improved user experience, and better search engine rankings.

Core Features & Use Cases

  • Performance Auditing: Utilizes Lighthouse to measure Core Web Vitals (LCP, INP, CLS) and other key performance metrics.
  • Bottleneck Identification: Analyzes runtime and bundle size to pinpoint specific areas for optimization.
  • Optimization Guidance: Provides actionable steps for improving performance, from code splitting to asset optimization.
  • Use Case: A developer can use this Skill to audit their website's performance, receive a detailed report on areas needing improvement, and get specific recommendations on how to fix them, such as optimizing images or implementing code splitting for faster initial loads.

Quick Start

Run a Lighthouse performance audit on the provided URL.

Frequently Asked Questions about performance-profiling

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

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

You can audit Core Web Vitals by running a Lighthouse performance audit on your web application URL. This process measures key metrics like LCP and CLS, identifies runtime bottlenecks, and provides actionable optimization guidance.

What is the best way to identify JavaScript bundle size issues causing slow load times?

Identifying bundle size issues requires running a bundle analysis alongside Lighthouse audits. This combination pinpoints specific areas for optimization, offering actionable steps like implementing code splitting or asset optimization to improve load times.

Do I need the Lighthouse CLI installed to run a web performance audit?

Yes, you need the Lighthouse CLI installed locally to execute web performance audits. The profiling automation relies on the Lighthouse CLI to measure Core Web Vitals and generate detailed reports for runtime bottleneck resolution.

How do I get actionable recommendations to fix web performance bottlenecks?

To get actionable recommendations for web performance bottlenecks, run an automated profiling audit. It analyzes runtime and bundle size to provide specific optimization steps, such as optimizing images or implementing code splitting for faster loads.

Why does my web app have a poor INP score and how can I optimize it?

A poor INP score indicates runtime bottlenecks in your web app. You can optimize it by running a Lighthouse performance audit to pinpoint specific interaction delays, followed by executing recommended code splitting and runtime optimizations.

Can I automate website performance profiling without manual Lighthouse configuration?

Yes, you can automate website performance profiling by executing the audit script on your target URL. It automatically measures Core Web Vitals, analyzes bundle size, and returns a detailed report with actionable optimization insights.