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.

We support .zip files containing any web project (HTML, CSS, JS, TypeScript, React, Next.js, Vue, Angular, etc.).

Yes, for Node.js-based projects. However, we also support static HTML projects without package.json.

Installation time depends on your project size and dependencies. Most projects complete in 30-60 seconds.

Projects are stored in your browser's memory. For permanent storage, we recommend downloading your project.

Prototyping should be fast, iterative, and disposable.

Use Tailwind CSS: Utility-first CSS speeds up visual iteration dramatically.
Component Libraries: Leverage Headless UI or Radix UI to skip building complex interactive states.
Mock Data: Don't build a backend until you need one. Use static JSON arrays to flesh out the UI.
Browser Environments: Use tools like BuildInBrowser to instantly preview and share prototypes.
Keep It Single View: Focus on the core user journey before adding auxiliary navigation or settings pages.