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Quickly prototype ideas with code

Free, instant, collaborative sandboxes for rapid web development.

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What’s a Sandbox?

A sandbox needs no setup - use a template to kickstart new projects, or start from a GitHub repo and begin coding in seconds.

The best JavaScript dev experience

Supercharged with npm

Use any of the 1M+ packages to build real, powerful apps quickly and efficiently.

Optimized for frameworks

Custom environments built specifically for React, Vue, Angular, and many more.

Integrated with GitHub

Import and run repos direct from GitHub. Or export your sandbox to a repo.

Sara VieiraDanny RutchieMaurice CherryGareth WilsonSiddharth Kshetrapal


Share templates, keep organized with folders, and enable your entire team to work on sandboxes together.

Accelerating the most creative developers and product teams

  • stripe
  • Atlasian
  • Shopify
  • Algolia
  • microsoft

What others are saying

“It's dramatically improved my experience of sharing ideas”

Brian VaughnReact Team

Brian Vaughn

Software Engineer, React Core Team

“CodeSandbox continues to amaze me every day”

Peggy Rayzisapollo

Peggy Rayzis

Engineering Manager, Apollo GraphQL

“It feels much more like my local environment”

Jonnie HallmanStripe

Jonnie Hallman

Designer Developer, Stripe

Create static sites, components, full-stack web apps

Join a community of creators who’ve crafted 900,000 public sandboxes and counting.

Get started, it’s free