HTML, CSS & JS Live Playground

Live interactive web code editor & sandboxed preview playground with real-time console log interceptor.

Production Web Code Sandbox

HTML, CSS & JS Live Playground

Build, test, and debug web code safely in your browser with real-time sandboxed preview, error reporting, and JS console interceptor.

Preview Sandbox
Ready
📟 JS Console Log
Console output initialized...

How the HTML, CSS & JavaScript Live Playground Works

The HTML, CSS & JavaScript Live Playground by DwellixTools is a fast, interactive web-based code editor and live sandbox. Designed for web developers, frontend engineers, students, and UI designers, this tool lets you write or paste HTML markup, CSS styling, and JavaScript logic with instant real-time rendering.

Whether you’re prototyping an animated UI card, testing a JavaScript algorithm, or debugging CSS flexbox/grid layouts, our playground provides a clean split-screen environment complete with a live JS Console Interceptor and one-click code export capabilities.

Key Features

  • ⚡ Real-Time Sandboxed Preview: Instant rendering of your HTML, CSS, and JavaScript code inside an isolated sandboxed iframe.
  • 💻 Tabbed Code Editors: Dedicated, syntax-focused editors for HTML, CSS, and JavaScript with line numbers and quick formatting.
  • 📟 Live Console Log Interceptor: Captures console.log(), console.info(), console.warn(), and console.error() calls directly from your script and displays them in a built-in console panel.
  • 🎨 Interactive Sample Templates: Pre-loaded interactive demos including an Animated Counter App, 3D CSS Card, and Dynamic Todo List.
  • 💾 One-Click HTML Export: Download your combined HTML, CSS, and JS as a standalone .html file ready to publish or share.
  • 🔒 100% Client-Side Privacy: Your code stays inside your browser. No server processing or external data tracking.

How to Use the HTML, CSS & JS Playground

  1. Enter Your Code: Use the HTML, CSS, and JavaScript tabs to input or paste your code.
  2. Observe Live Preview: Watch the right-hand preview panel automatically render your changes in real-time.
  3. Inspect Console Logs: Check the Console tab at the bottom to view runtime output and debug errors.
  4. Load Sample Demos: Select a preset from the Load Preset Template dropdown to load pre-built interactive examples.
  5. Export Your Work: Click 💾 Download HTML to save a complete, merged HTML web file to your computer.

Frequently Asked Questions (FAQ)

Is my code stored on a server?

No. All rendering, script execution, and previewing happen locally inside your browser’s sandboxed environment. Your code is completely private.

Can I test external libraries like Google Fonts or Tailwind CSS?

Yes! You can include <link rel="stylesheet" href="..."> or <script src="..."> tags inside the HTML editor section to import external CSS libraries or frameworks.

Does it support JavaScript console logs?

Yes! Our playground intercepts native console.log(), console.info(), console.warn(), and console.error() execution and displays the output cleanly in the built-in Console panel.