Google replaced the old responsiveness metric with Interaction to Next Paint (INP). It measures not just the first interaction but how fast your app reacts throughout the whole visit.
Fairer, and stricter
INP exposes slow interactions that FID missed: a button that stutters, a list that stalls. Scoring well means moving heavy work off the main thread and making interactions feel instant.
Our take
Responsiveness isn't a luxury; it's how fast a product feels. We treat Core Web Vitals as a default, not an afterthought — it touches both users and ranking.
