Google has recently announced that Interaction to Next Paint (INP) will become a primary Core Web Vitals metric, replacing First Input Delay (FID), starting in March 2024.
What is Interaction to Next Paint?
Interaction to Next Paint (INP) is a fairly new metric developed by Google to help website owners and developers evaluate the responsiveness of user interactions on their web pages. It measures the time it takes for a website to respond to all user interactions, such as button clicks or link taps, and provides the maximum time for all or most interactions.