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Glossary · Web

What is Core Web Vitals?

Core Web Vitals are the three metrics Google uses to measure page experience: LCP (how long the largest content element takes to load), INP (responsiveness to interaction) and CLS (visual shift). They affect both ranking and conversion rate.

Detail

Targets: LCP under 2.5 seconds, INP under 200 ms, CLS under 0.1. Traffic in Turkey is mobile-heavy, so measurement has to be done on mobile. The most frequent LCP culprit is an unoptimised hero image; the most frequent CLS culprit is late-loading ads and font shift.

Example

Cutting LCP from 4.2 seconds to 2.1 seconds lifts mobile conversion rate noticeably.
FAQ

Common questions on this topic.

How is Core Web Vitals calculated?

Targets: LCP under 2.5 seconds, INP under 200 ms, CLS under 0.1. Traffic in Turkey is mobile-heavy, so measurement has to be done on mobile. The most frequent LCP culprit is an unoptimised hero image; the most frequent CLS culprit is late-loading ads and font shift.

Why does Core Web Vitals matter?

Targets: LCP under 2.5 seconds, INP under 200 ms, CLS under 0.1. Traffic in Turkey is mobile-heavy, so measurement has to be done on mobile. The most frequent LCP culprit is an unoptimised hero image; the most frequent CLS culprit is late-loading ads and font shift.

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