INP measures how quickly your website responds when users interact with it, like clicking buttons or typing in forms. This Core Web Vital tracks the time between a user’s action and when the website visually updates in response. A good INP score means your website responds within 200 milliseconds, creating a smooth, responsive experience that search engines reward with better rankings.
See also: First Input Delay (FID), Core Web Vitals
Further reading: How to Test and Improve Website Load Time