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March 5, 2024 • 7 min read

Optimizing Web Performance: A Complete Guide

PerformanceWeb VitalsOptimization

Optimizing Web Performance: A Complete Guide


Web performance directly impacts user experience and business metrics. Here's how to optimize your web applications.


Core Web Vitals


Largest Contentful Paint (LCP)

LCP measures loading performance. Aim for LCP under 2.5 seconds.


First Input Delay (FID)

FID measures interactivity. Target FID under 100 milliseconds.


Cumulative Layout Shift (CLS)

CLS measures visual stability. Keep CLS under 0.1.


Optimization Techniques


Image Optimization

  • Use modern formats (WebP, AVIF)
  • Implement lazy loading
  • Serve responsive images

    • Code Optimization

  • Minify JavaScript and CSS
  • Remove unused code
  • Use code splitting

    • Caching Strategies

  • Browser caching
  • CDN caching
  • API response caching

    • Conclusion


    Performance optimization is an ongoing process. Monitor your metrics regularly and iterate on improvements.

    Dibyan Maharjan | Frontend Engineer