Web & ecommerce
Improve Ecommerce INP: Why Cart Buttons Feel Slow
Improve store responsiveness by reducing long tasks, unnecessary scripts and delayed feedback.
6 min
Fast loading can still feel slow
INP measures responsiveness to clicks, taps and keyboard input across a visit. A page can appear quickly while cart buttons and navigation respond slowly enough to feel broken.
What is a good INP?
Google defines 200 milliseconds or less as good at the 75th percentile. Long JavaScript work from excessive tracking, chat widgets, popups or complex filters is a common cause of poor responsiveness.
Measure valuable journeys first
Test navigation, category filters, adding a service, opening the consultation form and submitting it. Remove unused scripts, load secondary tools only when needed and review real-user data rather than laboratory scores alone.