Core Web Vitals Analyzer
Analyze Google's Core Web Vitals (LCP, FID, CLS) to improve SEO rankings and user experience.
Why Core Web Vitals Matter for SEO
Google has used Core Web Vitals as an official ranking factor since 2021. Good LCP (loading), FID (interactivity), and CLS (visual stability) scores improve search rankings, especially on mobile.
Need Continuous Performance Monitoring?
FireSEO automatically tracks Core Web Vitals and alerts you when performance degrades.
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Frequently Asked Questions
What are Core Web Vitals?
Three key metrics defined by Google: LCP (Largest Contentful Paint), FID/INP (Interaction Delay), and CLS (Cumulative Layout Shift).
What are good score thresholds?
LCP < 2.5s, FID < 100ms, CLS < 0.1 are considered 'good'. Exceeding these thresholds may negatively impact SEO.
Why are mobile and desktop scores different?
Mobile usually scores lower due to network and device limitations. Google prioritizes mobile scores for rankings.