INP (Interaction to Next Paint)

GarbuzSEO Specialist Published October 1, 2026

Definition

INP (Interaction to Next Paint) — INP measures the latency of interactions (clicks, taps, key presses) throughout the visit and reports one of the slowest.

Quick answer

Target: ≤ 200 ms. Ship less JavaScript, break up long tasks, avoid heavy third-party scripts.

Why it matters

INP replaced FID as a Core Web Vital in March 2024 because FID only measured the delay of the first interaction.

Sources

Interaction to Next Paint (INP) — web.dev

→LCP (Largest Contentful Paint)→

Core Web Vitals

Core Web Vitals are three Google metrics for real user experience: LCP (loading), INP (responsiveness) and CLS (visual stability).

LCP (Largest Contentful Paint)

LCP measures the time until the largest text block or image in the viewport is rendered.

CLS (Cumulative Layout Shift)

CLS measures visual stability: how much page elements shift unexpectedly.

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