React Lazy Loading Patterns

Lazy loading improves initial load time by deferring non-critical resources. Here's how to implement it.

React.lazy Basics#

Route-Based Code Splitting#

Preloading Components#

Component-Level Lazy Loading#

Image Lazy Loading#

List Virtualization#

Conditional Loading#

Bundle Analysis#

Loading States#

Error Recovery#

Best Practices#

Conclusion#

Lazy loading improves initial load performance by deferring non-critical resources. Use route-based splitting for the biggest impact, preload on user intent for better UX, and always provide meaningful loading states. Monitor bundle sizes and Core Web Vitals to measure impact.