Mastering Core Web Vitals in Next.js
Next.js provides out-of-the-box performance optimizations, but large bundle sizes and heavy client-side hydration can still degrade Interaction to Next Paint (INP). To achieve an INP score under 200ms, developers must minimize main thread blocking times by dividing heavy components into dynamic imports.
Dynamic routing and pre-fetching should be carefully configured. Over-prefetching on pages with hundreds of internal links can bottleneck the client network card, delaying critical initial data requests.