Boost Website Performance with Lazy Loading and Code Splitting: Smart Techniques for a Faster Web

What is Lazy Loading?

Lazy loading is a technique that delays loading images or elements until they’re needed (in the viewport). It helps:

• Reduce initial page size
• Minimize HTTP requests
• Save bandwidth for users

What is Code Splitting?

Code splitting divides large JavaScript files into smaller chunks that load only when required. This results in:

• Faster initial page load
• Better interactivity
• Lower perceived wait time

How to Implement It?

• In HTML/JS:
  • Use loading="lazy" on images and iframes
• In React/Next.js:
  • Use React.lazy() or dynamic import() for components
• Use bundlers like Webpack or Vite to automate the process

Additional Tips

• Test lazy loading on slow networks
• Use Lighthouse to monitor performance
• Avoid lazy loading critical elements (like logos or main banners)

Conclusion

Lazy loading and code splitting are modern, practical strategies to enhance speed and user experience.
Apply them step by step and watch your site’s performance improve.