The free browser-based code editor for HTML, CSS & JavaScript. Write, run, and preview code instantly — with syntax highlighting, smart autocomplete, and a file explorer. No downloads. No setup.
Welcome to Deoit
A complete toolkit for learning and building — right in your browser.
Write HTML, CSS, and JavaScript with syntax highlighting, autocomplete, auto-closing tags, and intelligent suggestions across 25+ token types.
Run your code instantly in a live preview window. See HTML, CSS, and JavaScript results in real-time — no page reloads.
Create, rename, and organize files and folders with drag-and-drop. Build multi-file projects just like a professional IDE.
Structured courses covering HTML, CSS, JavaScript, React, and Node.js. Learn at your own pace with interactive code examples.
Sign in with Google or GitHub to save projects to the cloud. Access your code from any device, anywhere — always safe.
Export projects as JSON or download as ZIP. Share your work, back it up, or continue editing elsewhere.
No downloads. No installation. Just open the editor and start building.
Visit deoit.vercel.app and open the free online code editor. Nothing to install.
Use the built-in editor to write HTML, CSS, and JavaScript with syntax highlighting and autocomplete.
Click Run to see your code in action. Preview results instantly in your browser.
Structured courses with 81+ lessons across 6 programming languages and tools.
20 lessons · Tags, forms, semantic HTML, and page structure.
Start Learning →17 lessons · Layout, flexbox, grid, animations, and responsive design.
Start Learning →20 lessons · Variables, functions, DOM, async, and ES6+ features.
Start Learning →12 lessons · Components, JSX, hooks, state, and props.
Start Learning →6 lessons · Modules, file system, HTTP server, and npm basics.
Start Learning →6 lessons · Git, terminal, browser devtools, and VS Code tips.
Start Learning →Learn web development with hands-on tutorials and practical guides.
Everything you need to know about using Deoit.
Yes. Deoit is 100% free with no hidden fees, no premium plans, and no ads. You get full access to the code editor, syntax highlighting, autocomplete, file explorer, console output, and project export. Sign in with Google or GitHub to unlock unlimited files.
Absolutely. Deoit is designed as a learning platform for web development. It includes 81+ interactive lessons for HTML, CSS, JavaScript, React, and Node.js, plus a built-in code editor where you can practice writing code with syntax highlighting and instant preview.
No. Deoit runs entirely in your browser. There is nothing to install, download, or configure. Just open the website and start coding immediately.
Yes. Deoit is fully responsive and works on mobile devices, tablets, and desktops. The editor, file explorer, and console all adapt to your screen size with touch-friendly controls.
Deoit is lightweight, fast, and built with vanilla JavaScript (no frameworks). It offers syntax highlighting, smart autocomplete, drag-and-drop files, 7 themes, instant preview, console output, and project export — all without any build tools or dependencies.
Yes. You can export your projects as JSON, download them as ZIP files, or copy the code manually. Sign in to access export and import features.
No downloads. No installation. No sign-up required.