Performance isn't optional, it's a feature. Here are battle-tested tips for optimizing Next.js apps.

2. Optimize Images

I've had my fair share of bugs and late-night debugging sessions over this. Here is a breakdown of what I learned so you don't have to make the same mistakes.

Always use next/image

import Image from 'next/image';

export function Hero() {
  return (
    <Image
      src="/hero.jpg"
      alt="Hero image"
      width={1200}
      height={600}
      priority // Load immediately for LCP
      placeholder="blur"
      blurDataURL="data:image/jpeg;base64,..."
    />
  );
}

4. Implement Proper Caching

5. Minimize Client Components

Every 'use client' directive adds to your JavaScript bundle. Keep client components small and focused:

6. Bundle Analysis

# Install analyzer
npm install @next/bundle-analyzer

# Run analysis
ANALYZE=true npm run build

Hope this helps you on your own coding journey! Feel free to reach out if you have any questions or just want to chat about tech.