Demystifying INP: New tools and actionable insights

Interaction to Next Paint (INP) is a crucial metric in Google's Core Web Vitals that measures the responsiveness of web pages based on field data. Modern frameworks like Next.js are optimized for good baseline INP scores, but the nature of the metric requires developers to focus on real-world strategies to improve it. This article provides insights into how to optimize INP in challenging situations by understanding its phases and implementing effective techniques. The key takeaway is that optimizing INP involves minimizing other JavaScript from running, shortening the event handler phase, and reducing the duration of the browser render.