Design, code, preview, and deploy modern web applications directly in your browser. From responsive HTML5/CSS3 layouts to modern React & Angular frontends and Node.js backend services, with AI coding assistance built in.
A unified environment combining code editing, live browser preview, and cloud terminal tooling.
Monaco editor with Emmet abbreviation expansion, CSS variable inspection, color pickers, autoprefixing validation, and ECMAScript 2022+ language support.
View your web applications in real time. As you save changes to your stylesheets, templates, or scripts, the live preview renders immediately with state preservation.
Accelerate UI development with a visual component canvas. Drag buttons, inputs, modals, and navigation bars onto the canvas with bi-directional code generation.
Native project detection for Vite, Next.js, Rollup, and Webpack. Install frontend packages via npm or pnpm in the cloud terminal.
Pair program with an AI assistant that understands modern CSS, responsive layouts, web accessibility (a11y), and frontend framework component architecture.
Run Node.js, Python, Go, or Java backend microservices in the same workspace to serve dynamic data directly to your frontend preview.
Preview clean CSS custom properties and responsive components with zero build delay.
.dashboard-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: 1.5rem;
padding: 2rem;
}
.dashboard-card {
background: rgba(18, 27, 47, 0.85);
backdrop-filter: blur(12px);
-webkit-backdrop-filter: blur(12px);
border: 1px solid #23334d;
border-radius: 12px;
padding: 1.5rem;
transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.dashboard-card:hover {
transform: translateY(-4px);
box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}Standards, browsers, and frameworks supported in OnlineAIIDE.
| Web Technology | Standards / Versions | Features Included |
|---|---|---|
| Markup & Styling | HTML5, CSS3, Modern CSS (Grid, Flexbox, Custom Properties) | Emmet, autoprefixer, responsive design mode |
| Frontend Frameworks | React 18, Angular 17+, Vue 3, Svelte, Vanilla JS | Component scaffolding, live preview, HMR |
| Build Toolchains | Vite, Rollup, PostCSS, Tailwind CSS | Asset minification, bundle optimization, tree-shaking |
| Package Managers | pnpm 9+, npm 10+, yarn 1.22+ | High-speed dependency caching, npm registry access |
| Browser Compatibility | Modern Evergreen Browsers (Chrome, Edge, Safari, Firefox) | Zero installation, responsive touch & keyboard support |
Common questions about building web applications on OnlineAIIDE.