Suggest an editImprove this articleRefine the answer for “What is "Core Web Vitals"?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**Core Web Vitals** is a set of key Google metrics that measure the quality of user experience on a site: loading speed, responsiveness, and layout stability. **Key point:** these metrics are an official ranking factor and include LCP, INP, and CLS.Shown above the full answer for quick recall.Answer (EN)Image**Core Web Vitals** is a set of key Google metrics that measure **the quality of user experience on a site**: how fast the main content loads, how responsive the page is, and how stable the layout behaves during loading. These metrics are an **official ranking factor**, so they directly affect SEO. ## The set includes three metrics 1. **LCP (Largest Contentful Paint)** - the speed at which the largest, most significant element appears on screen (an image, a banner, a heading). It captures the sense of "how fast the page visually loaded". 2. **INP (Interaction to Next Paint)** - a generalized responsiveness metric (it replaced FID). It shows how fast the site reacts to the first interaction: a click, a tap, input. It matters for the feeling that "the site is alive and not lagging". 3. **CLS (Cumulative Layout Shift)** - layout stability. It measures whether elements "jump" during loading (for example, when a button shifts and the user accidentally taps the wrong spot). The purpose of Core Web Vitals is to give search engines a single universal standard for measuring **a site's real usability through the user's eyes**, not just technical parameters.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.