Google's three measures of user experience: how quickly the main content appears, how quickly the page responds to a tap, and how much the layout jumps around while loading.
They are a ranking factor, but a light one — a tiebreaker between pages of similar quality rather than a route to the top. The stronger argument for fixing them is conversion: a page that jumps as it loads costs you enquiries regardless of Google.
They are measured on real visitors, not in a lab, which means the figures reflect the phones and connections your actual customers use.
| LCP | Largest Contentful Paint | How long until the main thing appears — under 2.5s |
|---|---|---|
| INP | Interaction to Next Paint | How quickly it responds to a tap — under 200ms |
| CLS | Cumulative Layout Shift | How much things move while loading — under 0.1 |
This comes up most often in Technical SEO & Site Speed. Crawling, indexing, speed, structured data and site architecture — the plumbing that decides whether your pages can compete.
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