What metrics are included in Core Web Vitals?

Core Web Vitals includes three key metrics:

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#1. LCP (Largest Contentful Paint)

Shows how long it takes for the main element on the page (text, image, video) to load. Target: under 2.5 seconds.

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#2. FID (First Input Delay)

Measures how quickly the page responds to the user's first action - a click, a tap, input. Target: under 100 milliseconds.

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#3. CLS (Cumulative Layout Shift)

Evaluates how much and how unexpectedly the page's elements shift during loading. Target: under 0.1.

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These metrics are part of the system for assessing user experience quality and directly affect SEO. Google uses them in ranking.