A browser-based IDE for HTML, CSS & JavaScript. Syntax highlighting, smart autocomplete, multi-file projects, and live preview — no setup needed.
Full-powered IDE · Works in your browser · No setup required
<div class="hero"> <h1>Hello World</h1> <p>Welcome to Deoit</p> </div>
.hero { display: flex; justify-content: center; background: linear-gradient(135deg, #667eea, #764ba2); border-radius: 16px; }
const app = async () => { const res = await fetch('/api'); const data = await res.json(); console.log(data); };
A complete development environment — no local setup, no compromise.
Professional-grade syntax highlighting for 25+ token types, intelligent autocomplete with fuzzy matching, auto-closing pairs, and smart indentation.
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 curriculum covering HTML, CSS, and JavaScript. Deep reference material with runnable 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.
Zero configuration. Instant environment. Just open and start building.
Launch Deoit in your browser. Nothing to install, nothing to configure.
Use the professional editor with syntax highlighting, autocomplete, and multi-file project support.
Click Run to see your code in action. Preview results instantly in your browser.
81+ structured lessons across 6 domains — from foundational HTML to advanced React and Node.js.
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 includes 52 free lessons for HTML, CSS, and JavaScript, plus a full browser-based IDE with syntax highlighting, multi-file support, 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.
Your browser is all you need.