INP for React Apps: Profiling and Eliminating Long Tasks
The article discusses the importance of Interaction to Next Paint (INP) as a key metric for measuring UI responsiveness in React applications. It outlines common causes of poor INP, such as long tasks and excessive re-renders, and provides a step-by-step guide to diagnose and improve performance. By optimizing event handlers and reducing unnecessary JavaScript, developers can enhance user experience significantly.
- ▪INP measures the time from user interaction to the next paint, with targets set for good, needs improvement, and poor performance.
- ▪Common issues affecting INP in React apps include long tasks, render storms, and heavy work inside event handlers.
- ▪To improve INP, developers should confirm the problem, identify long tasks, optimize event handlers, and minimize unnecessary re-renders.
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| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/nayankyada/inp-for-react-apps-profiling-and-eliminating-long-tasks-2ml1 |
| Publication time | Wed, 20 May 2026 16:59:32 +0000 |
| Retrieval time | 2026-05-20T17:05:02.733Z |
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Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 2638501) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Nayan Kyada Posted on May 20 • Originally published at nayankyada.com INP for React Apps: Profiling and Eliminating Long Tasks #performance #react #corewebvitals INP (Interaction to Next Paint) measures how quickly your UI responds after a user interacts. If a click, tap, or keypress is followed by a noticeable delay, you’ll feel it — and so will your users.
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