Karthik Divi
·3 min read

shadcn/ui Online IDE - Try shadcn Components in a Full Cloud Workspace

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shadcn/ui is not a typical component library. You do not install it as a dependency. You copy components into your project and own the code. That model works well, but it means you need an actual project to copy them into -- a file system, Tailwind CSS configured, Radix UI primitives installed.

A snippet editor cannot give you that. OneCompiler Studio can.

How Studio works

Studio is OneCompiler's cloud IDE. It gives you a VS Code-like editor, a terminal, a file tree, and a VM running your project. You are not pasting code into a box and hitting run. You are working in a real development environment that happens to be in your browser.

The shadcn template ships with:

  • A React project with shadcn/ui already configured
  • Tailwind CSS and Radix UI primitives set up
  • Terminal access for adding more components via the CLI
  • 2 vCPUs and 4 GB memory (about 3.3 GB available) on the VM
  • Live preview of your running app
  • Ready in about 1 minute

Why shadcn needs a full environment

Most component libraries let you import from a package and move on. shadcn works differently. When you run npx shadcn-ui add button, it creates actual files in your project. You then modify those files directly. The components depend on a cn() utility, a Tailwind config with CSS variables, and Radix primitives under the hood.

This is a multi-file, multi-dependency setup. There is no meaningful way to test it in a playground.

In Studio, the whole chain is already wired up. You can:

  • Add components from the CLI. Run npx shadcn-ui add dialog in the terminal and the component files appear in your project. Modify them however you want.
  • Customize the theme. Edit CSS variables in your globals file, adjust the Tailwind config, see changes reflected immediately.
  • Compose complex UIs. Combine Card, Button, Dialog, Form, and Table components the way you would in production. Multiple files, shared utilities, proper imports.
  • Install additional packages. Need a form library like React Hook Form or a date picker? Install it from npm and wire it into your shadcn components.

Who uses shadcn/ui

It has become the default component system for a lot of the React ecosystem. Vercel uses it. Supabase uses it. It is the standard recommendation when someone asks "what component library should I use with Tailwind?" The copy-paste-and-own model resonates with developers who want control over their UI code without starting from scratch.

If you are evaluating whether shadcn fits your project, or just want to try composing a few components together, Studio lets you do that without configuring Tailwind and Radix locally.

When this is useful

You want to prototype a UI with shadcn before adding it to your real codebase. You are learning how the components work internally -- since you own the source, reading and modifying it is the point. You want to test a theme customization. You are showing someone a component composition and need to share a working project, not a screenshot.

Try it

Open OneCompiler Studio for shadcn/ui. You will have a running project with shadcn components ready to use in about a minute.