Performance Optimizations in Next.js

Maximize your Next.js application's performance with these battle-tested optimization techniques that improve both user experience and SEO rankings.

Advanced Image Optimization

Go beyond basic image optimization:

import Image from 'next/image';

• AVIF format adoption
• Responsive images with srcset
• On-demand image generation
• CDN transformation parameters

Hybrid Rendering Strategies

Combine rendering techniques for optimal performance:

• Static pages with ISR for dynamic content
• Streaming SSR for slow data dependencies
• Client-side fetching for user-specific content
• Edge runtime for personalized static pages

Bundle Analysis and Optimization

Reduce JavaScript bundle sizes:

// next.config.js
module.exports = {
  experimental: {
    optimizePackageImports: ['@heroicons/react']
  }
}

• Dependency analysis with @next/bundle-analyzer
• Tree-shaking configuration
• Module chunking strategies
• Dynamic import for heavy components

Implement these techniques to achieve sub-second page loads even for complex applications.