TL;DR
Interaction to Next Paint (INP) is a Core Web Vital that measures the latency, in milliseconds, between a user interaction (click, tap, or key press) and the next frame the browser paints in response.
What is Interaction to Next Paint (INP)?
Interaction to Next Paint (INP) is a Core Web Vital that measures the latency, in milliseconds, between a user interaction (click, tap, or key press) and the next frame the browser paints in response.
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INP Thresholds & Benchmarks
| Metric | Good | Needs Improvement | Poor |
|---|---|---|---|
| INP | ≤ 200 ms | 200 ms, 500 ms | > 500 ms |
How INP is Measured
INP is collected from real users via the Event Timing API and aggregated in the Chrome User Experience Report. Lab tools approximate it through Total Blocking Time.