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performance

Identify web performance bottlenecks and prioritize fixes using Core Web Vitals.

Updated Nov 29, 2025
Search Tags:#performance#optimization#lighthouse#web#web-vitals#core-web-vitals#page-speed
One-click install
npx skills add https://github.com/thimslugga/agent-skills --skill performance-thimslugga
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: performance
Source: https://github.com/thimslugga/agent-skills/tree/main/skills/development/performance
Command: npx skills add https://github.com/thimslugga/agent-skills --skill performance-thimslugga

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Web performance bottlenecks cause slow loading and poor user experience, leading to drop-offs and wasted resources.

Core Features & Use Cases

  • Identify bottlenecks in page load and runtime, prioritize fixes based on Core Web Vitals, and provide actionable optimizations with concrete examples.
  • Use cases include optimizing initial load times for marketing sites, SPAs, and e-commerce pages across devices and networks.
  • Real-world example: run a performance audit and implement a set of recommended changes to reduce TTFB and improve LCP.

Quick Start

Run a Lighthouse audit on your site and implement the top three recommended optimizations.

Frequently Asked Questions about performance

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

FAQPage Schema
How do I identify web performance bottlenecks and improve Core Web Vitals?▼

Web performance bottlenecks are identified by auditing page load and runtime metrics, allowing you to prioritize fixes based on Core Web Vitals and implement actionable optimizations to enhance overall user experience.

What is the best way to reduce page load times for SPAs and e-commerce sites?▼

The best way to reduce page load times for SPAs and e-commerce sites is to optimize render-critical assets and runtime resources, applying best-practice configurations to improve loading speed and interactivity across devices.

How do I fix a slow Largest Contentful Paint score from a Lighthouse audit?▼

Fix a slow Largest Contentful Paint score by implementing recommended performance changes from your Lighthouse audit, prioritizing render-critical asset delivery to reduce load times and enhance page interactivity.

Can I use these performance optimization tactics for marketing sites across different devices?▼

Yes, you can apply these performance optimization tactics to modern marketing sites, SPAs, and e-commerce scenarios to reduce initial load times and enhance interactivity across various devices and network conditions.

Why does my web app experience poor interactivity and drop-offs during runtime?▼

Poor interactivity and user drop-offs occur due to web performance bottlenecks in runtime execution, which requires identifying and fixing render-critical asset issues to improve loading speed and user experience.

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