SEO

Core Web Vitals

Google's set of metrics measuring real-world user experience: loading speed (LCP), interactivity (INP), and visual stability (CLS).

What Is Core Web Vitals?

Core Web Vitals are three specific metrics Google uses to evaluate user experience on web pages. Largest Contentful Paint (LCP) measures loading performance—the time until the largest visible element renders (target: under 2.5 seconds). Interaction to Next Paint (INP) measures responsiveness—how quickly the page responds to user interactions (target: under 200ms)

Cumulative Layout Shift (CLS) measures visual stability—how much the page layout shifts during loading (target: under 0.1). These metrics are confirmed Google ranking factors and directly impact search visibility.

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Related Terms

Web Performance

Web

The speed and efficiency with which web pages load and respond to user interactions, directly impacting UX and SEO.

Search Engine Optimization (SEO)

SEO

The practice of optimizing websites to rank higher in search engine results and attract more organic (non-paid) traffic.

Technical SEO

SEO

The practice of optimizing a website's technical infrastructure to help search engines crawl, index, and rank content effectively.

Mobile-First Indexing

SEO

Google's practice of primarily using the mobile version of a website for indexing and ranking in search results.

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