JSARSpatial Web Browser Engine

Empowering Web developers to craft immersive experiences with the full power of modern web technologies — HTML5, CSS3, and TypeScript.

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Design for Spatial Web

Every HTML element is spatially rendered in the browser, powered by JSAR.

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Web Standards Compliant

Supports modern Web standards, including HTML5, CSS3, DOM, WebGL, and WebXR.

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High Performance

Dynamically batches all spatialized HTML elements into ≤10 GPU draw calls per frame.

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Cross-Platform

Delivers flawless performance across every platform (desktop, mobile, and XR) with pixel-perfect consistency.

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Web Developer Friendly

Deep Chrome DevTools integration for seamless debugging and profiling.

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Extensible

An extensible plugin system and modular architecture unlock limitless customization.

Web Compatibility Overview

JSAR provides comprehensive support for modern Web standards. For a complete browser compatibility report, please visit our Browser Compatibility Data.

Scripting & Modules

[Completed] JavaScript - Full ES2023 support
[Completed] TypeScript - Native TypeScript compilation
[Completed] ECMAScript Module - Modern module system
[Completed] WebAssembly - High-performance WASM support
[Completed] Web Worker - Multi-threaded processing

3D Graphics

[Completed] WebGL 1.0 - Fully supported
[Completed] WebGL 2.0 - Complete implementation
[In Progress] WebGPU - In development

WebXR Device APIs

[Completed] Spaces & Reference Spaces - Complete implementation
[Completed] Stereo Rendering - Optimized dual-eye rendering
[Completed] Input Sources - Controllers and hand tracking
[Completed] Hand Tracking - Precise gesture recognition

Classic Rendering

[In Progress] DOM API - Partial implementation
[In Progress] HTML5 - Core features supported
[In Progress] CSS3 - Growing feature set
[Completed] Canvas 2D - Full 2D rendering support

Latest Updates

Latest Releases

v0.8.2

v0.8.1

v0.8.0

View Full Changelog

Getting Started

Ready to build your first spatial web application? Check out our comprehensive guides:

Quick Start

Learn the basics and create your first JSAR application in minutes.

Start Learning →

Examples

Explore practical examples and tutorials to deepen your understanding.

View Tutorials →

Community

Join our growing community of developers building the future of spatial web:

💬 GitHub Discussions
🐛 Report Issues
📖 Contributing Guide
📰 Blog - Technical insights and updates