HTML & CSS · Senior · Question 21 of 75
Which three metrics make up Core Web Vitals today?
- 1FCP, TTI and TBT
- ✓Correct answer: LCP, INP and CLS
- 3LCP, FID and CLS
Explanation
LCP - loading speed of the main content (good ≤ 2.5 s), INP - responsiveness to interactions (≤ 200 ms), CLS - visual stability (≤ 0.1). INP replaced FID in March 2024 because FID only measured the delay of the first interaction. FCP and TBT are useful but supporting metrics.