What is INP (Interaction to Next Paint)?
A metric measuring the overall responsiveness of a page to user interactions throughout its lifetime.
Why It Matters
INP replaced FID as a Core Web Vital and gives a more complete picture of how responsive your page feels.
Real-World Example
Clicking a filter button and waiting 400ms for the product list to update indicates poor INP.
“Understanding terms like INP (Interaction to Next Paint) matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
Core Web Vitals
Google's three key metrics for measuring page loading speed, interactivity, and visual stability.
FID (First Input Delay)
A metric measuring the time from when a user first interacts with a page to when the browser can respond.
LCP (Largest Contentful Paint)
A metric measuring how long it takes for the largest visible content element to finish loading.
CLS (Cumulative Layout Shift)
A metric measuring how much page content unexpectedly moves around while loading.
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Related Terms
Core Web Vitals
Google's three key metrics for measuring page loading speed, interactivity, and visual stability.
LCP (Largest Contentful Paint)
A metric measuring how long it takes for the largest visible content element to finish loading.
FID (First Input Delay)
A metric measuring the time from when a user first interacts with a page to when the browser can respond.
CLS (Cumulative Layout Shift)
A metric measuring how much page content unexpectedly moves around while loading.
Cache
A temporary storage that keeps copies of frequently accessed data for faster retrieval
CDN
A network of servers around the world that stores copies of your content closer to users