Ultimate Guide to Learn How to Improve Web Performance Through JavaScript, Web Vitals, and Chrome Dev Tools
Introduction When did you last wait for a website to load and decided it wasn’t worth the wait? You’re not alone—users expect fast and seamless web experiences. This guide’ll explore how to improve web performance using JavaScript, Core Web Vitals, and Chrome Dev Tools. Let’s dive in! Understanding Web Performance Metrics Overview of Core Web Vitals Google introduced Core Web Vitals to help measure user experience effectively. These metrics focus on load time, interactivity, and visual stability. Largest Contentful Paint (LCP) This measures how long it takes for the largest visible element on the page to load. Aim for under 2.5 seconds. First Input Delay (FID) FID gauges the time from when a user first interacts with your site to when the browser responds. A good FID is less than 100ms. Cumulative Layout Shift (CLS) CLS evaluates unexpected layout shifts. Keep it below 0.1 for a stable user experience. Additional Metrics to Monitor While Core Web Vitals are crucial, metrics like Time...