Core Web Vitals are Google's official metrics for user experience. Passing these tests is a direct ranking factor.

1. Largest Contentful Paint (LCP)

Goal: < 2.5s. This measures load speed. Fix: Preload your hero image, use NextGen formats (WebP), and implement server-side caching.

2. Interaction to Next Paint (INP)

Goal: < 200ms. This measures responsiveness. Fix: Break up long JavaScript tasks and defer non-essential scripts (like chat widgets) until after load.

3. Cumulative Layout Shift (CLS)

Goal: < 0.1. This measures visual stability. Fix: Always set explicit width/height attributes on images and reserve space for ads.

For a broader view of site health, check our Technical SEO Audit Checklist.

Analyze your Vitals: Check your scores in the Zyro Performance Report.