Web Performance
7 min read
Optimizing Web Performance with Lighthouse | Complete Guide
Introduction to Lighthouse
Isabella Martinez
July 25, 2024
Table of Contents
- 1. Introduction to Lighthouse
- 2. Running a Lighthouse Audit
- 3. Improving Performance
- 4. Automating Audits
Introduction to Lighthouse
Google Lighthouse is an open-source tool for improving the quality of web pages with audits for performance, accessibility, SEO, and more.
1. Introduction to Lighthouse
Google Lighthouse is an open-source tool for improving the quality of web pages with audits for performance, accessibility, SEO, and more.
2. Running a Lighthouse Audit
Chrome DevTools
- Open Chrome DevTools (F12)
- Go to Lighthouse tab
- Choose categories
- Click "Analyze page load"
Command Line
npx lighthouse https://example.com --view
3. Improving Performance
Core Web Vitals
- LCP (Largest Contentful Paint) – < 2.5s
- FID (First Input Delay) – < 100ms
- CLS (Cumulative Layout Shift) – < 0.1
Optimization Techniques
- Image optimization – WebP, lazy loading
- Code splitting – Reduce bundle size
- Minification – Compress CSS/JS
- CDN – Content delivery network
- Caching – Browser and server caching
4. Automating Audits
Set up automated Lighthouse audits in CI/CD with GitHub Actions.
Need Performance Help? Contact Giopio Related: Core Web Vitals, Speed Optimization
