Core Web Vitals
TL;DR
Core Web Vitals are Google's 3 key metrics for user experience — loading speed (LCP), interactivity (INP), and visual stability (CLS). They're an official ranking factor.
Explain Simply
Core Web Vitals are like a health checkup for your website. Google checks three vital signs: How fast does it load? How quickly does it respond when you click? Does stuff jump around on screen?
Core Web Vitals are Google's set of 3 metrics measuring real user experience: LCP (loading), FID/INP (interactivity), CLS (visual stability). They are part of page experience signals that affect search rankings.
Since March 2024, INP (Interaction to Next Paint) replaced FID as the interactivity metric. INP measures the latency of all interactions throughout the page lifecycle, not just the first one. Good thresholds: LCP ≤2.5s, INP ≤200ms, CLS ≤0.1.
Core Web Vitals are measured using real user data from the Chrome UX Report (CrUX). Lab tools like Lighthouse provide estimates, but Google's ranking algorithm uses field data. A URL passes Core Web Vitals when 75% of page loads meet the 'good' threshold for all three metrics.
⚡Why It Matters
Since 2021, Core Web Vitals are an official Google ranking factor. Websites meeting good thresholds for all 3 metrics have a ranking advantage. Google reports that users are 24% less likely to abandon page loads on sites passing Core Web Vitals.
🔍How AiSEO Checks
AiSEO checks all 3 Core Web Vitals via PageSpeed Insights API and CrUX, displays results with color-coded thresholds (green/yellow/red) and specific improvement suggestions.
AiSEO Score Impact
Up to 4 points in the Performance category (15% of total score) — umbrella for LCP, INP, CLS
Fix Difficulty
Editor: N/A | Developer: Medium | AI Agent: Medium