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Free Online HTML Editor with Live Preview

html.editor.free is a fast, free, browser-based code editor that lets you write and test HTML, CSS, and JavaScript and see the rendered result instantly. Type your code on the left, hit Run, and the live preview appears on the right — no installation, no sign-up, and no download needed. It runs entirely in your browser, so it works on any operating system and any device, anywhere in the world.

Whether you are a beginner learning to code, a developer prototyping a layout, or a teacher demonstrating web concepts, this online "try it" editor gives you a clean sandbox to experiment with web code safely and immediately.

Why use this online HTML editor?

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Instant Live Preview

See your HTML, CSS and JavaScript render in real time as you edit. Run with one click or Ctrl+Enter.

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100% Free, No Sign-Up

No account, no paywall, no ads interrupting your work. Open it and start coding right away.

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Works Everywhere

Runs in any modern browser on Windows, macOS, Linux, Android and iOS. Fully responsive for mobile.

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Templates Included

Start fast with ready-made examples: forms, flexbox cards, CSS animations, tables, JS demos and more.

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Save & Copy

Download your work as an index.html file or copy the full source to your clipboard in one click.

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Private & Secure

Your code never leaves your browser. Nothing is uploaded to a server — everything runs locally.

How to use the HTML editor

Write your code in the editor panel on the left. You can paste existing HTML or start from one of the built-in templates.
Click Run (or press Ctrl+Enter) to render your code in the live preview panel.
Edit and re-run as many times as you like — adjust your CSS, tweak JavaScript, and instantly see the result.
Save your work with the Download button, or use Copy to grab the full HTML for your project.

What you can build and test

This editor supports complete web pages, so you can experiment with almost anything that runs in a browser. Embed your styles inside <style> tags, add interactivity with <script> tags, and structure content with standard HTML elements. Common uses include:

Learning HTML basics like headings, lists, links, images and tables · practicing CSS layouts with Flexbox and Grid · testing responsive design and media queries · trying out JavaScript snippets and DOM manipulation · building forms, buttons and UI components · prototyping landing pages · and checking how a code snippet behaves before adding it to a real project.

Frequently asked questions

What is an online HTML editor?

An online HTML editor is a browser-based tool that lets you write HTML, CSS, and JavaScript code and instantly preview the rendered result without installing any software. html.editor.free shows your code on one side and the live output on the other, so you can experiment and learn as you type.

Is this HTML editor free to use?

Yes. html.editor.free is completely free with no sign-up, no account, and no download required. Just open it in any browser and start coding.

Can I run JavaScript and CSS in this editor?

Yes. You can write full HTML pages including embedded CSS in <style> tags and JavaScript in <script> tags. The live preview executes everything just like a real browser page.

How do I run my code?

Click the Run button or press Ctrl+Enter. Your HTML is rendered instantly in the live preview panel.

Can I save or download my HTML code?

Yes. Use the Save button to download your work as an index.html file, or use Copy to copy the full code to your clipboard.

Does it work on mobile phones and tablets?

Yes. The editor is fully responsive. On smaller screens the editor and preview stack vertically so you can code comfortably on any device, anywhere in the world.