Nov 27 - Dec 1, 2025

London, UK & Online

React Advanced 2025

Name: React Advanced 2025
Start: 2025-11-27T23:00:00.000Z
End: 2025-12-01T22:59:00.000Z

We will be diving deep

Full remote ticket included with Multipass.

Buy tickets Learn more

Get your Multipass

Code of Conduct

Get ready for an annual deep dive into the latest trends in React and Web development. Learn from engineers behind the framework ecosystem and early adopters at the main React Conference in the UK.

The concept of the event is both about covering all you need to catch up on in the React ecosystem, combined with deep technical exploration of the latest architectural trends, new feature adoption, and efficient ways to solve complex problems.

Engage in discussion rooms, hallway track with experts, hands-on practical workshops, and tens of insightful talks. Engineers of any level are welcome but be prepared for hardcore.

Sponsorship opportunitites

React Beyond the DOM

Upcoming

React Beyond the DOM

Erik Rasmussen

Attio

It's easy to forget what the creators of React knew from the start: that React is not only for building web pages. Most of us have heard of React Native, that renders to native mobile components, but React doesn't have to render to "components" at all. There's React PDF to generate PDFs and Ink for building UI in the terminal.At my company, we've built a way for developers to use React to build plugins for our webapp that render to our custom components, giving us full control over the UI design (the "how"), whilst giving the plugin developer full control UX (the "what").In my talk, I'll explain what it's like to build a React renderer and reconciler, what they are and how to use them.I'd like to do a live demo showing how React can be used to convert html to markdown. And then I'd like to demonstrate how React can render to the Real World, by controlling IOT devices.

react native iot architecture html

Modern React Architecture

Nov 11, 15:00

Modern React Architecture

WorkshopPro

Brad Westfall

In this workshop we'll dive into the latest advancements in React and best practices for building modern React apps. We'll take a look at modern NextJS and React Router 7 Framework (aka Remix) along with React's new "React Server Components". We'll also talk about improving the data-fetching strategies of your SPAs along with options for migrating your SPA to modern React Router.

best practices

Building Interactive Async UI with React 19 and Ariakit

Upcoming

Building Interactive Async UI with React 19 and Ariakit

Aurora Scharff

Web developer and Consultant at Crayon Consulting

Handling async operations in UI components can be tricky – flickering pending states, inefficient state updates, and unstable user experiences are common issues. Building accessible UI components presents additional challenges, as meeting accessibility requirements often requires extra effort, which can add complexity to the development process.In the context of the Next.js App Router, this session will demonstrate how React Server Components streamline data fetching, while other React 19 tools help manage mutations, loading states, and optimistic updates more effectively. We’ll combine these with Ariakit to simplify the process of building interactive, accessible UI components with less boilerplate. You’ll leave with practical strategies for managing async operations while ensuring a smooth, reliable user experience.

react server components

Node.js: More Threads Than You Think

Upcoming

Node.js: More Threads Than You Think

Paolo Insogna

Node.js TSC Member

Node.js was announced in 2009 as a single-threaded JavaScript runtime. In 2018, it became multi-threaded, and no one noticed.What can worker_threads do? What are they useful for? What's the best way of communicating between two threads?

node.js

Build LLM agents in TypeScript with Mastra and Vercel AI SDK

Upcoming

Build LLM agents in TypeScript with Mastra and Vercel AI SDK

Workshop

Eric Burel

LLMs are not just fancy search engines: they lay the ground for building autonomous and intelligent pieces of software, aka agents.
Companies are investing massively in generative AI infrastructures. To get their money's worth, they need developers that can make the best out of an LLM, and that could be you.
Discover the TypeScript stack for LLM-based development in this 3 hours workshop. Connect to your favorite model with the Vercel AI SDK and turn lines of code into AI agents with Mastra.ai.

typescript artificial intelligence

Final Fantasy IX in React: Fighting the Browser, One Frame at a Time

Upcoming

Final Fantasy IX in React: Fighting the Browser, One Frame at a Time

Joe Hart

Workflow

The original Final Fantasy IX was a masterclass in creative constraint – pushing the PlayStation’s hardware to its limits with tricks like pre-rendered backgrounds and low-res models. In this talk, Joe Hart recreates the magic in React, diving into WebGL, canvas positioning, and CSS hacks that should probably be illegal. It’s part love letter to retro games, part deep dive into browser APIs, and part performance art.

web development

Automatic and Accessible Dynamic Themes With OKLCH Color Space

Upcoming

Automatic and Accessible Dynamic Themes With OKLCH Color Space

Nina Torgunakova

Evil Martians

A few lines of code and UI theme will follow any colour that you want. Do you want it? Explore the OKLCH colour space for creating dynamic themes! This colour model ensures better a11y, predictable color transformations and supports the wide-gamut P3 colors. When it comes to changing colours by code, RGB, HSL, or LCH can lead to low contrast and poor accessibility; but OKLCH is specifically designed to avoid unexpected results with colour transformations. This talk will guide you on implementing dynamic themes using OKLCH in your React project along with Tailwind CSS, helping you automatically generate accessible palettes with vibrant, accurate colours.

web development

Gamified 3D Solar System Explorer: An Interactive Learning Journey with Three.js

Upcoming

Gamified 3D Solar System Explorer: An Interactive Learning Journey with Three.js

Workshop

Houda Mouttalib

Craft immersive XR educational experiences through declarative 3D rendering with this advanced workshop. Leverage React Three Fiber's component-based architecture to build a gamified solar system explorer featuring dynamic orbital mechanics, interactive raycasting, and WebGL optimizations. Master performance-critical techniques including InstancedMesh implementation, reactive state management, and WebXR integration while creating engaging STEM visualizations. This workshop bridges theoretical physics concepts with practical front-end development, demonstrating how Three.js can transform educational content through spatial computing paradigms.Agenda:Introduction to React Three Fiber and Three.js: Setting up the project environmentBuilding the Solar System Scene: Creating planets, orbits, and space backgrounds with animations Interactivity and Gamification: Raycasting for object selection and interactionPerformance Optimization: Using InstancedMesh for efficient renderingWebXR Integration: Enabling AR/VR experiences in the browser