Core Web Vitals
A set of three metrics that measure real-world user experience: loading speed (LCP), interactivity (INP), and visual stability (CLS).
Understanding Core Web Vitals
Core Web Vitals are a set of specific page experience metrics that Google uses as a ranking signal. They measure three aspects of user experience: Largest Contentful Paint (LCP) measures loading performance — how long it takes for the main content to appear. Interaction to Next Paint (INP) measures responsiveness — how quickly the page responds to user input. Cumulative Layout Shift (CLS) measures visual stability — how much the page layout shifts unexpectedly during loading. Good scores are LCP under 2.5 seconds, INP under 200 milliseconds, and CLS under 0.1. Improving Core Web Vitals involves optimizing images, reducing JavaScript, using efficient CSS, implementing lazy loading, and choosing fast hosting.
Keep learning
Indexing
The process by which search engines store and organize web pages in their database for retrieval in search results.
Mobile Optimization
The practice of ensuring your website provides an excellent experience on mobile devices, which is critical for search rankings.
Page Speed
How quickly a web page loads and becomes interactive, measured by metrics like LCP, FCP, and Time to Interactive.
Track core web vitals and more with Optic Rank
Get AI-powered SEO intelligence that puts glossary knowledge into actionable insights.