Performance
Performance
Section titled “Performance”Introduction
Section titled “Introduction”Performance optimization in Next.js is largely built-in — the framework handles code splitting, image optimization, and font loading automatically. This module covers how to use these features effectively and when to apply them.
Why Performance Matters
Section titled “Why Performance Matters”- User experience — 53% of users abandon a site that takes longer than 3 seconds to load
- SEO — Google uses page speed as a ranking factor (Core Web Vitals)
- Conversion — A 1-second delay can reduce conversions by 7%
Topics Covered
Section titled “Topics Covered”- Why Performance Matters — Core Web Vitals, measuring performance
- Image Optimization —
next/image, remote patterns, responsive images - Font Optimization —
next/font, Google Fonts, custom fonts - Script Optimization —
next/script, loading strategies - Lazy Loading — Dynamic imports, component lazy loading
- Bundle Optimization — Code splitting, tree shaking, analyzing bundles
- Best Practices — Performance checklist, common patterns
Learning Outcomes
Section titled “Learning Outcomes”- Optimize images, fonts, and scripts in Next.js
- Implement lazy loading for components and libraries
- Analyze and optimize JavaScript bundles
- Understand and improve Core Web Vitals scores