What is Core Web Vitals?
Core Web Vitals are Google's standardised performance metrics (LCP, INP, CLS) that measure real-world user experience and serve as ranking signals.
Core Web Vitals Explained
Core Web Vitals consist of three metrics that Google uses to evaluate page experience: Largest Contentful Paint (LCP) measures loading performance and should be under 2.5 seconds, Interaction to Next Paint (INP, which replaced FID in March 2024) measures interactivity and should be under 200 milliseconds, and Cumulative Layout Shift (CLS) measures visual stability and should be under 0.1. These metrics are collected from real Chrome users via the Chrome User Experience Report (CrUX). For Next.js applications like Reddwise, optimising Core Web Vitals requires: using next/image for automatic image optimisation and lazy loading, minimising client-side JavaScript with React Server Components, implementing font display swap for web fonts, and leveraging Vercel's edge network for fast TTFB globally.
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