Browser & Web Performance · Junior · Question 13 of 75

Which three metrics are the Core Web Vitals today?

1LCP, FID and TBT
2FCP, TTFB and Speed Index
✓Correct answer: LCP (loading), INP (responsiveness) and CLS (visual stability)

Explanation

INP replaced FID as a Core Web Vital in March 2024. TTFB and FCP are useful supporting metrics but not Core Web Vitals.

Further reading

web.dev: Web Vitals ↗

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