Next.js Performance Optimization Guide

Optimize Next.js applications for maximum performance. Covers ISR, SSG, image optimization, bundle analysis, and Edge Functions.

nextjsreactperformance

Next.js Performance Features

  • Automatic code splitting
  • Static Site Generation (SSG)
  • Incremental Static Regeneration (ISR)
  • Built-in Image optimization
  • Edge Runtime support

Optimization Techniques

1

Use Static Generation When Possible

SSG pages are pre-rendered at build time. Use getStaticProps for pages that don't need real-time data.

2

Implement ISR for Dynamic Content

ISR lets you update static pages without rebuilding. Use revalidate to control freshness.

3

Use next/image

The Image component handles lazy loading, responsive sizing, and format optimization automatically.

4

Analyze Bundle Size

Use @next/bundle-analyzer to identify large dependencies. Consider dynamic imports for code splitting.

Frequently Asked Questions

Use SSG (getStaticProps) for content that doesn't change often. Use SSR (getServerSideProps) only for personalized or real-time data.
ISR regenerates static pages in the background after the revalidate interval. Users see cached content while new content is generated.

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