How does this skill help with Core Web Vitals?

It analyzes LCP, FID, and CLS metrics to identify specific causes like large hero images or render-blocking scripts and provides actionable code fixes to improve scores.

Does it handle image optimization?

It provides strategies for converting images to modern formats like WebP and AVIF, implementing responsive picture tags, and setting up native lazy loading.

How do I verify the performance improvements?

The skill guides you through establishing a baseline, applying fixes, and then re-running Lighthouse or RUM audits to compare before-and-after metrics.

Can it help reduce JavaScript bundle sizes?

Yes, it identifies heavy dependencies, suggests lighter alternatives, and helps implement code splitting and tree shaking to minimize the main thread workload.

Is it compatible with modern frameworks like Next.js?

Absolutely. It includes specific patterns for frameworks, such as utilizing the Next.js Image component and dynamic imports for route-based code splitting.

Web Performance Optimization

Name: Web Performance Optimization
Author: claudiodearaujo

byclaudiodearaujo

0•

设计工具

Optimizes website loading speed, Core Web Vitals, and runtime performance to enhance user experience and SEO rankings.

This skill empowers developers to systematically diagnose and resolve performance bottlenecks in web applications. It provides a comprehensive framework for measuring baseline metrics like Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS), reducing JavaScript bundle sizes through code splitting, and implementing advanced caching and image optimization strategies. By following a structured approach from measurement to verification, it ensures that web projects achieve lightning-fast load times and high scores on performance audits like Lighthouse.

主要功能

01JavaScript bundle size reduction and tree shaking

02Modern image optimization using WebP, AVIF, and lazy loading

030 GitHub stars

04Critical rendering path and network waterfall analysis

05Core Web Vitals analysis and optimization (LCP, FID, CLS)

06Implementation of advanced caching and asset delivery strategies

使用场景

01Reducing high bounce rates caused by slow initial page loads

02Optimizing heavy React or Next.js applications for mobile performance

03Improving Lighthouse scores and passing Core Web Vitals audits

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add claudiodearaujo/izacenter web-performance-optimization

For use in Claude.ai and ChatGPT

Download Skill