SEO & AI Search
Core Web Vitals
Quick definition
Google's performance metrics: Largest Contentful Paint (LCP), Interaction to Next Paint (INP), Cumulative Layout Shift (CLS).
What it actually means
Core Web Vitals are Google's page experience signals, directly influencing SERP ranking. Targets: LCP under 2.5 seconds, INP under 200ms, CLS under 0.1. Shopify themes vary wildly — Dawn-based and modern third-party themes (Impulse, Symmetry) typically pass; older themes and app-heavy stacks frequently fail. Failing Core Web Vitals can drop organic traffic 10-30% on top-performing pages. Mobile vitals matter more than desktop for DTC (typically 65-75% mobile traffic).