What is Core Web Vitals?
Google's three page-experience metrics — Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) — that factor into search ranking.
Core Web Vitals are real-user performance metrics Google uses as a ranking signal. LCP measures how fast the largest element renders (target: under 2.5 seconds). INP measures responsiveness to user input (target: under 200ms). CLS measures unexpected layout shifts (target: under 0.1). Sites that fail these on mobile see ranking penalties. InBuild generates Next.js code with image optimization, font preloading, and no layout-shifting patterns by default — Core Web Vitals are good out of the box, which means search-quality benefits accrue without manual tuning.