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Frontend question · Browser & web performance › Core Web Vitals

Which set of "good" Core Web Vitals thresholds is correct?

LCP ≤ 2.5 s, INP ≤ 200 ms, CLS ≤ 0.1

"Good" means LCP (Largest Contentful Paint) at most 2.5 s, INP (Interaction to Next Paint) at most 200 ms and CLS (Cumulative Layout Shift) at most 0.1. Google measures these at the 75th percentile of real visits.

The option with 4.0 s and 500 ms is the tempting wrong answer. Those numbers are the start of the "poor" range, not the "good" one. The options with CLS 0.25 are wrong too, because 0.25 is where CLS becomes poor.