Core Web Vitals
Core Web Vitals are Google's three UX performance metrics: LCP (Largest Contentful Paint ≤2.5s), INP (Interaction to Next Paint — Good ≤200ms / Needs Improvement 200-500ms / Poor >500ms), CLS (Cumulative Layout Shift ≤0.1). All three must be green to qualify as 'Good' and affect mobile ranking.
Core Web Vitals are Google's three UX performance metrics: LCP (Largest Contentful Paint ≤2.5s), INP (Interaction to Next Paint — Good ≤200ms / Needs Improvement 200-500ms / Poor >500ms), CLS (Cumulative Layout Shift ≤0.1). All three must be green to qualify as 'Good' and affect mobile ranking.
Key actions
- LCP: preload hero image, CDN, font-display swap.
- INP: split long tasks, use React 18 useTransition.
- CLS: set image width/height, font size-adjust.
What is Core Web Vitals?
Core Web Vitals are Google's three UX performance metrics: LCP (Largest Contentful Paint ≤2.5s), INP (Interaction to Next Paint — Good ≤200ms / Needs Improvement 200-500ms / Poor >500ms), CLS (Cumulative Layout Shift ≤0.1). All three must be green to qualify as 'Good' and affect mobile ranking.
Details and examples
Checklist:
Related terms
SEO (Search Engine Optimization), Page Speed.
Core Web Vitals · term at a glance
| Field | Value |
|---|---|
| Term | Core Web Vitals |
| Category | Technical |
| Related | SEO (Search Engine Optimization), Page Speed |
Frequently asked questions
What is Core Web Vitals?
Core Web Vitals are Google's three UX performance metrics: LCP (Largest Contentful Paint ≤2.5s), INP (Interaction to Next Paint — Good ≤200ms / Needs Improvement 200-500ms / Poor >500ms), CLS (Cumulative Layout Shift ≤0.1). All three must be green to qualify as 'Good' and affect mobile ranking.
References
By the 23SEOGEO team · Last updated: