performance

Audit web pages with Lighthouse and optimize Core Web Vitals.

2|Updated Feb 5, 2026

Search Tags:#performance #optimization #lighthouse #web #core-web-vitals #loading-speed

Ready to run

npx skills add https://github.com/damacus/agent-skills --skill performance-damacus

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: performance
Source: https://github.com/damacus/agent-skills/tree/main/skills/performance
Command: npx skills add https://github.com/damacus/agent-skills --skill performance-damacus

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Web performance bottlenecks slow down pages, hurt user experience, and reduce conversions; this skill provides a structured approach to identify and fix those bottlenecks.

Core Features & Use Cases

Lighthouse-guided audits to surface performance bottlenecks across the critical rendering path.
Budget-driven optimizations for resources (HTML, CSS, JS, images) with actionable code changes and measurable outcomes.
Use Case: optimize a dashboard or marketing site to achieve faster LCP, CLS, and TBT, improving user engagement and search rankings.

Quick Start

Run a Lighthouse performance audit on your site and implement the recommended optimizations to improve Core Web Vitals.

Frequently Asked Questions about performance

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

FAQPage Schema

How do I improve my website's Core Web Vitals and Lighthouse performance score?▼

To improve Core Web Vitals, this skill runs Lighthouse-guided audits to identify bottlenecks in the critical rendering path and provides actionable code optimizations for faster LCP, CLS, and TBT metrics.

What is the best way to optimize a slow loading dashboard or SPA?▼

The best way to optimize a slow SPA is applying budget-driven optimizations across HTML, CSS, JS, and images, generating actionable code changes that result in measurable loading speed improvements.

How do I set a performance budget for web page resources?▼

You set a performance budget by defining resource limits for HTML, CSS, JS, and images, then applying actionable code changes to meet those constraints and achieve measurable Lighthouse metric improvements.

Why does my content-heavy site have a poor LCP score, and how can I fix it?▼

A poor LCP score on content-heavy sites often stems from critical rendering path bottlenecks; this skill identifies those issues via Lighthouse audits and prescribes optimizations to improve loading speed and user engagement.

Can I use this to fix loading speed issues on a marketing landing page?▼

Yes, you can optimize marketing landing pages by auditing loading performance bottlenecks and applying structured optimizations to improve Core Web Vitals, which directly enhances user experience and search rankings.

What are the limitations of using Lighthouse audits for web performance optimization?▼

Lighthouse audits identify critical rendering path bottlenecks and resource issues, but achieving measurable results depends on accurately applying the provided code changes and maintaining your structured performance budget over time.