Last update: Feb 27, 2026 Reading time: 4 Minutes
INP, or Interaction to Next Paint, is a critical performance metric that measures the responsiveness of web applications. It evaluates how quickly a user can interact with a page and see visual feedback, making it an essential factor for enhancing user experience. Understanding how to optimize INP as a primary performance metric can significantly impact user engagement, retention, and overall satisfaction.
Optimizing INP is crucial for several reasons:
To effectively optimize INP as a primary performance metric, consider implementing the following strategies:
<link rel="preload"> for important resources to reduce loading time when a user interacts with the page.To support your efforts in optimizing INP, consider familiarizing yourself with some advanced techniques:
Real-Time Spatial Mapping: This technique can enhance your app’s performance when interacting with augmented reality (AR) features, allowing for smoother experiences. Learn more about how to implement real-time spatial mapping for AR guided pickers here.
Using Haptic Engagement Metrics: Integrating engagement metrics can provide insights into how users interact with your site, enabling you to refine performance measures accordingly. Read more about engagement metrics here.
Spatial Digital Twin Integration: Syncing data from physical sensors to a spatial digital twin can significantly improve accuracy and performance in real-time data applications. Discover more about how to sync physical sensor data here.
A good INP value is typically below 200 milliseconds, which indicates that the user interaction is met with quick visual feedback. Values above this threshold can lead to a poor user experience.
Since INP is a part of Google’s Core Web Vitals, a better INP score can positively influence your website’s ranking on search engine results pages. Websites that perform better in terms of INP are likely to gain more visibility and attract more visitors.
Yes, various tools can assist in measuring and analyzing INP, including Google PageSpeed Insights, Lighthouse, and WebPageTest. These tools provide comprehensive metrics and recommendations for further optimization.
Audience segmentation helps you understand how different users interact with your site, allowing you to tailor optimizations based on user behavior and preferences, leading to improved INP. Learn more about audience segmentation here.