Core Web Vitals
Core Web Vitals are three Google metrics that measure the real experience on a page: loading speed (LCP), responsiveness (INP) and visual stability (CLS).
Definition
Core Web Vitals are the three metrics Google uses to evaluate page experience. They are measured based on real visitors using data from the Chrome browser.
How it works
Google's thresholds for a good page are: LCP (Largest Contentful Paint) under 2.5 seconds, INP (Interaction to Next Paint) under 200 milliseconds, and CLS (Cumulative Layout Shift) under 0.1. INP replaced FID in March 2024.
Google evaluates each metric based on 75% of visits: a page must be fast for the vast majority of visitors, not just on your own computer.
Why it matters for your site
Core Web Vitals have been a ranking signal since 2021, but their weight remains limited compared to content relevance. Their true impact is commercial: a slow page loses visitors before they even read your offer.
The We-R perspective
Poor scores rarely stem from the platform itself and are often caused by what is added to it: uncompressed images, autoplay videos, and stacked tracking scripts. On Webflow, hosting and the CDN are already optimized; our work therefore focuses primarily on media file sizes and the number of third-party scripts.
Learn more
See also:Structured data,Landing page,CMS. And to put it into practice:our Webflow sitesorour SEO & GEO consulting services.
Sources: Google Search Central, Core Web Vitals documentation · web.dev (LCP, INP, CLS thresholds) · Google, replacement of FID with INP (March 2024).
Last updated: October 2026.
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