Potta Vijay Kumar

In today’s fast-paced digital landscape, performance isn’t just a luxury — it’s a necessity. A delay of even 100 milliseconds can impact user experience and conversion rates. That's why monitoring front-end performance is crucial for any modern web application. Two powerful tools in the performance monitoring arsenal are Web Vitals and Google Lighthouse . Let's explore what they are, how they work, and how you can leverage them to ensure your applications stay lightning-fast and user-friendly. What Are Web Vitals? Web Vitals is an initiative by Google to provide unified guidance on essential metrics that matter most to user experience. The Core Web Vitals: Largest Contentful Paint (LCP): Measures loading performance. Target: < 2.5s First Input Delay (FID): Measures interactivity. Target: < 100ms Cumulative Layout Shift (CLS): Measures visual stability. Target: < 0.1 These metrics focus on actual user perception and interaction, helping developers prioritize real-...

Performance is one of the most critical aspects of a great user experience. As front-end applications grow in complexity, optimizing how and when resources are loaded becomes essential. Today, let’s talk about Lazy Loading and Code Splitting —two powerful techniques to enhance your app's speed and responsiveness. Lazy Loading: Load on Demand Lazy loading is the strategy of loading assets only when needed , instead of during the initial page load. Benefits: Reduces initial bundle size Speeds up page load time Improves Core Web Vitals (especially Largest Contentful Paint) How it works in React: const LazyComponent = React.lazy(() => import('./MyComponent'));   <Suspense fallback={<div>Loading...</div>}>   <LazyComponent /> </Suspense> Use lazy loading for: Images below the fold Routes/components not visible initially Large third-party libraries Code Splitting: Break Your Bundle Instead of shipping o...