Optimizing Next.js App Router for Core Web Vitals — A Practical Guide (opens in new tab)

Core Web Vitals have been a ranking factor for a while, but App Router introduced new patterns that affect how you optimize for them. Some old approaches don't apply. Some new ones are surprisingly easy to miss. Here's what actually moves the needle for LCP, CLS, and INP in a Next.js App Router application — from lessons building a production app — the same patterns power the free AI image generator high quality output at pixova.io. The Three Metrics — What Changed in App Router LCP (Largest ...