Meta Launches Immersive Web SDK for Building Spatial Experiences in the Browser

• Meta’s new Immersive Web SDK (IWSDK) is now in early access, enabling WebXR developers to create immersive, cross-device browser experiences.
• The SDK arrives as monthly WebXR usage on Meta Quest exceeds one million users, signaling growing demand for scalable web-native spatial tools.

Meta has opened early access to the Immersive Web SDK (IWSDK), a toolkit designed for building WebXR experiences. Introduced at Meta Connect, it gives developers a foundation for creating spatial apps that run directly in the browser. Meta reports an average of over one million monthly users engage with WebXR on Quest, highlighting steady growth in browser-based XR.

IWSDK is built on Three.js and uses a component-based structure to keep projects organized as they grow. It handles complex parts of WebXR, including input management, object stability across sessions, and web-style interactions like clicks and hover states. The SDK’s tools are modular and can be added to existing projects or used as a complete starting point.

The SDK was designed to pair with the Meta Spatial Editor, allowing teams to build scenes visually and set up basic logic without writing code. Developers can then add custom components and refine behavior, enabling designers and engineers to work side by side. IWSDK also includes built-in systems for locomotion, spatial audio, grab interactions, and scene understanding, helping teams ship performant mixed-reality experiences faster.

🌀 Tom’s Take:

The browser is still the widest door into spatial computing, and Meta’s IWSDK, paired with the Spatial Editor, is a clear bet on making that door easier to walk through. It gives developers speed and lowers the barrier to entry.

Source: Meta

Disclosure: Tom Emrich has previously worked with or holds interests in companies mentioned. His commentary is based solely on public information and reflects his personal views.