FID metric will be replaced by INP on March 12, 2024.

Modified on Mon, 12 Feb at 8:00 AM

Interaction to Next Paint (INP) will replace First Input Delay (FID) as the Core Web Vitals Metric at 12th March 2024



Google is using a 28-day rolling period, INP metric should meet the 200ms threshold to prevent it from impacting your CWV Assessment, before February 13th 




This means that from this date, INP will be used to calculate whether the website passess the Core Web Vitals Assessment.


Interaction to Next Paint (INP) is a pending Core Web Vital metric that assesses a page's overall responsiveness to user interactions by observing the latency of all qualifying interactions that occur throughout the lifespan of a user's visit to a page. The final INP value is the longest interaction observed (sometimes ignoring outliers).

To provide a good user experience, websites should strive to have an Interaction to Next Paint of 200 milliseconds or less. To ensure you're hitting this target for most of your users, a good threshold to measure is the 75th percentile of page loads, segmented across mobile and desktop devices.

Please read the official documentation here: Interaction to Next Paint (INP) and Optimise Interaction to Next Paint



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