Interaction to Next Paint (INP)
Posted: Tue Apr 22, 2025 6:46 am
Google has announced that INP (Interaction to Next Paint) is officially replacing FID (First Input Delay) as the new Core Web Vitals metric for responsiveness. Its replacement will take effect in March 2024.
Interaction to Next Paint (INP) is a real-user web performance indicator that measures the responsiveness of a web page. It measures how long it takes for the browser to respond to user interactions, such as clicks, after the page loads.
NPI is designed to reflect the user experience of how quickly and smoothly a website responds to their input. It is a key indicator of the page's interactivity and responsiveness.
Unlike FID, which only measures input latency, INP considers the responsiveness rcs data china of the entire page throughout the user's session.
Here's how Google defines INP scores:
Excellent : less than or equal to 200 milliseconds
Improvement needed : between 200 and 500 milliseconds
Poor : more than 500 milliseconds
Unoptimized JavaScript and CSS files are often the cause of poor INP scores. We'll show you how to measure and improve INP later.
Interaction to Next Paint (INP) is a real-user web performance indicator that measures the responsiveness of a web page. It measures how long it takes for the browser to respond to user interactions, such as clicks, after the page loads.
NPI is designed to reflect the user experience of how quickly and smoothly a website responds to their input. It is a key indicator of the page's interactivity and responsiveness.
Unlike FID, which only measures input latency, INP considers the responsiveness rcs data china of the entire page throughout the user's session.
Here's how Google defines INP scores:
Excellent : less than or equal to 200 milliseconds
Improvement needed : between 200 and 500 milliseconds
Poor : more than 500 milliseconds
Unoptimized JavaScript and CSS files are often the cause of poor INP scores. We'll show you how to measure and improve INP later.