React + Angular + Vanilla playground • Monaco + Sandbox • AI Review
Build, run, and share code instantly.
CodPen is a CodPen-like environment for React, Angular, and Vanilla projects. Create files & folders, edit with Monaco, run with a live sandbox preview, and ask AI for targeted improvements.
Everything you need to move fast
A practical, modern setup for building and testing ideas with clean UI and strong ergonomics.
VS Code-like File Explorer
Create files & folders, rename, delete, and keep everything organized.
Monaco Editor
Fast editing with syntax highlight and a familiar coding experience.
Live Preview Sandbox
Run React, Angular, or Vanilla instantly with a real preview + console.
AI Code Review
Send your project to AI for review and receive targeted code changes.
Shareable Projects
Save and share your work with a single link (coming soon).
Clean UX
A focused layout for fast iteration and fewer distractions.
Designed for creators
CodPen is built for fast iteration: write code, run it, see it, improve it. Repeat.
Prototyping
Spin up UI ideas quickly and test them live.
Teaching
Share runnable examples with students or teammates.
Debugging
Reproduce issues in isolation and fix them faster.
Showcasing
Create clean demos for portfolios and product updates.
- Project structure with folders & files
- Live preview and runtime console
- AI panel for review & code generation
- A clean layout that scales to mobile
No setup. Just code.
FAQ
Can I create files and folders like VS Code?
Yes. Use the file explorer to add, rename, and delete items — ideal for real project structures.
Does it support React, Angular, and Vanilla projects?
Yes. Switch between modes and run instantly in the live preview sandbox.
Is the AI panel required?
No. It’s optional. Use it for review or generation when you want a second brain.
Can I share a project link?
Sharing is planned. You’ll be able to save and share with a single URL.