What is Performance Optimization?

Performance optimization involves techniques to make web applications load faster and run smoother. This includes code splitting, lazy loading, image optimization, caching, and reducing JavaScript bundle size.

What to Learn

  • Core Web Vitals (LCP, FID, CLS)
  • Code splitting and lazy loading
  • Image and font optimization
  • Memoization (React.memo, useMemo, useCallback)
  • Bundle analysis and tree shaking
  • Service workers and caching

Career Relevance

Performance expertise is highly valued, especially for senior roles. Companies losing revenue to slow sites actively seek developers who can diagnose and fix performance issues.

Related Jobs

Senior Frontend DeveloperPerformance EngineerFull Stack DeveloperTechnical Lead