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# Optimistic UI Updates: Enhancing User Experience and Improving Interaction to Next Paint (INP)


- **Date:** Thursday, Jul 10, 2025
- **Time:** 10:10–10:40 (30 min)
- **Room:** Stage 5
- **Event:** World Congress 2025
- **Tags:** frontend, performance, ui/ux

## Recording

[Watch recording](https://www.wearedevelopers.com/videos/1573-optimistic-ui-updates-enhancing-user-experience-and-improving-interaction-to-next-paint-inp)

## Description

With Interaction to Next Paint (INP) recently becoming a stable Google Core Web Vital, ensuring your web application is responsive to user interactions has never been more critical.

This talk will cover the importance of INP and show you how to measure it effectively in your projects. You’ll discover how leveraging optimistic UI updates—providing immediate visual feedback—can significantly reduce delays, improve INP, and elevate the overall user experience. Through practical strategies and real-world examples, you’ll learn how to identify opportunities for applying optimistic UI and walk away with actionable insights to make your web applications faster and more user-friendly.

## Speaker

### [Marc Müller](https://www.wearedevelopers.com/@marc-muller)

Sr. Software Engineer at Grover


## Related talks at this congress

- [The Journey of a Pixel in a React Application](https://www.wearedevelopers.com/events/world-congress-2025/sessions/890-the-journey-of-a) — Shem Magnezi
- [The irresistible UX: the psychology of brainwaves and clickbait](https://www.wearedevelopers.com/events/world-congress-2025/sessions/698-the-irresistible-ux) — Dora Makszy
- [Prompt API & WebNN: The AI Revolution Right in Your Browser](https://www.wearedevelopers.com/events/world-congress-2025/sessions/888-prompt-api-webnn-the) — Christian Liebel
- [Building Interactive Async UI with React 19 and Ariakit](https://www.wearedevelopers.com/events/world-congress-2025/sessions/640-building-interactive) — Aurora Scharff