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Core Web Vitals

A set of user-experience metrics: LCP measures loading, INP responsiveness, and CLS visual stability. Use field data to understand real visits and lab tests to diagnose changes.

A set of user-experience metrics: LCP measures loading, INP responsiveness, and CLS visual stability. Use field data to understand real visits and lab tests to diagnose changes.

Example and use

Example: a late-loading hero image can affect LCP; layout shifts can affect CLS. Use the relevant measurement to locate the cause.

Latest materials

All materials

Practical articles and guides by SurfUp.

Guide · 10 min

“What is…” pages and AI answers: lost clicks or falling demand

A bank’s reference section lost 24% of visits as demand fell 13%. How to tell clicks lost to an AI block from falling demand and how to measure it.

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Guide · 8 min

Traffic dropped after a Google update

How to tell whether a traffic drop comes from a Google update, seasonality or a site fault. 2026 update timeline, a six-question check and a plan for the first 14 days.

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Guide · 9 min

Demand fell or the site lost: reconciling traffic with Wordstat

Demand for deposits fell 75%, traffic 37%; for cards demand −35%, traffic −63%. How to reconcile traffic with demand and not blame the site for the market.

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