Services
Development Services
SEO Services
Automation & AI
Specialized Services
Industries
Core Web Vitals are Google's set of page experience metrics used as a ranking signal. The three metrics are: LCP (Largest Contentful Paint) — how long it takes for the main content to load, INP (Interaction to Next Paint) — how responsive the page is to user interactions, and CLS (Cumulative Layout Shift) — how stable the layout is as the page loads.
Google's target thresholds: LCP under 2.5 seconds (good), under 4 seconds (needs improvement), over 4 seconds (poor). INP under 200ms (good). CLS under 0.1 (good). Pages passing all three are considered to have a good page experience.
Core Web Vitals are measured using real-user data from Chrome (CrUX data), not just lab-based testing tools. A page can score well in PageSpeed Insights but still fail in the field if real users experience slower loads due to network conditions or device capabilities.
Example
A page with a hero image that is not properly preloaded may have an LCP of 5+ seconds. Fixing the image delivery typically cuts LCP by 40-60% on mobile.
Category
technical seoApply this in practice
Definitions are step one.
Our team implements Core Web Vitals correctly for clients across 15 active engagements. If you want a technical SEO audit that covers this and 100+ other checkpoints, talk to us.