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Online HTML Editor | Live Preview Code Viewer

Write and edit HTML, CSS, and JavaScript online with real-time live preview. Perfect for testing web snippets, formatting blog posts, and learning code.

100% Secure & Local: Your files never leave your device.
index.html
Live Preview

Code HTML with Real-Time Previews

Opening a text editor, saving an `.html` file, jumping to your browser, and hitting 'Refresh' is a slow and agonizing way to test a small piece of code. Our Live HTML Editor provides a dual-pane workspace. Type your HTML, CSS, or JavaScript on the left, and watch the web page render instantly on the right. It is the ultimate tool for rapid prototyping, debugging UI snippets, and learning web development.

The Three Pillars of the Web

To build a modern web element in the editor, you must combine three distinct languages:

  • HTML (The Skeleton) HTML provides the physical structure of the page. You use tags like `<h1>` for headlines, `<button>` for buttons, and `<img>` for images. Without HTML, the page is empty.
  • CSS (The Paint) CSS targets the HTML skeleton and makes it beautiful. You use `<style>` tags to define colors, margins, drop-shadows, and layout grids. Without CSS, the web looks like a Word document from 1995.
  • JavaScript (The Muscle) JavaScript adds interactivity. You use `<script>` tags to make the page respond to logic. It is what makes a menu open when you click the button, or validates a form before submission.

How to Use This Tool

  1. Upload or Input Data: Select your file or paste your data directly into the tool interface. Everything remains on your device.
  2. Configure & Process: Adjust any optional settings if necessary. The tool will process your data instantly inside your browser.
  3. Download Result: Preview the output and click the download or copy button to save your final results.

Frequently Asked Questions

Do I need to include the and tags?

For quick prototyping, no. Modern browsers are incredibly smart. If you just type `

Hello

` into the editor, the browser will automatically wrap it in a hidden body tag and render it perfectly.

Can I link to external CSS frameworks like Bootstrap?

Yes! You can paste a `<link rel="stylesheet" href="...">` tag pointing to an external CDN (like Bootstrap or Tailwind) directly into the HTML pane, and the live preview will instantly apply those external styles.

Is my code saved if I accidentally close the tab?

The editor utilizes LocalStorage to auto-save your keystrokes directly into your browser's memory. If you accidentally refresh or close the tab, your code will still be there when you return.