Build, Preview, and Share React Apps Instantly in Your Browser
No installation required. No local setup. Just drag, drop, and run.
Everything you need to build faster
Zero Setup Required
Start building immediately without any local configuration.
Drag & Drop Projects
Upload any React, Next.js, or Vite project as a ZIP.
Instant Preview
See your changes live with automatic hot-reloading.
NPM Integration
Install any package from the npm registry instantly.
Browser-Based Terminal
Full terminal access for debugging and testing.
One-Click Export
Download production builds with a single click.
Frequently Asked Questions
What is a WebContainer and how does it work?
WebContainer is a WebAssembly-based runtime that runs Node.js directly in your browser, eliminating the need for local installation.
How do I upload my project ZIP file?
Simply drag and drop your ZIP file into the circular upload zone, or click to browse and select it from your computer.
What file types are supported for upload?
We support .zip files containing any web project (HTML, CSS, JS, TypeScript, React, Next.js, Vue, Angular, etc.).
Does my project need a package.json file?
Yes, for Node.js-based projects. However, we also support static HTML projects without package.json.
How long does the installation process take?
Installation time depends on your project size and dependencies. Most projects complete in 30-60 seconds.
Is my code stored permanently?
Projects are stored in your browser's memory. For permanent storage, we recommend downloading your project.