HTML Live Editor — Write, Preview & Learn HTML Instantly
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Free · No signup · Browser-based

Write HTML. See it live. Learn by doing.

A real-time HTML, CSS, and JavaScript playground that runs entirely in your browser. Type code on the left, watch the rendered result update instantly on the right.

Real-time preview Runs locally Download your file
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The Live Editor

Edit the code below. The preview updates as you type. Everything runs in your browser — your code is never uploaded.

live-preview.html
HTML / CSS / JS
Live Preview
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Features built for learning and tinkering

Everything you need to experiment with HTML, CSS and JavaScript in one clean interface.

Instant Live Preview

Your rendered output refreshes as you type — no save button, no page reloads, no waiting.

Fully Client-Side

All processing happens in your browser. Your code stays on your device and is never sent to a server.

Download Your Work

Export your editor contents as a ready-to-use .html file with a single click.

Copy to Clipboard

Grab your entire code with one click using the browser's clipboard API — useful for sharing or backups.

Starter Boilerplate

Insert a clean HTML5 document structure with a single click and start from a solid foundation.

No Account Required

Open the page and start typing. There is no login wall, no tracking of your code, and no setup.

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How to use the editor

Three simple steps from blank page to working preview.

Write your code

Type or paste HTML, CSS inside <style> tags, and JavaScript inside <script> tags into the left panel.

Watch the preview

The right panel renders your document live. Adjust your markup and see the result update automatically.

Copy or download

Use the toolbar buttons to copy the full code to your clipboard or download it as an index.html file.

How it works

Under the hood, the tool is deliberately simple and transparent.

1. Your input

The editor captures everything you type in a standard textarea element. Nothing leaves your browser.

2. Rendering

Your code is written into a sandboxed iframe using the browser's native HTML parser — the same engine that renders web pages.

3. No backend

There is no server-side processing. The preview updates locally, so it works offline once the page has loaded.

Who is this for?

Practical ways people use a live HTML editor.

Learners

Test a new tag or attribute and immediately see what it does, without setting up a local development environment.

Educators

Demonstrate HTML concepts live during a lesson or share a self-contained snippet with students.

Quick experiments

Prototype a small layout, a CSS effect, or a JavaScript snippet before moving it into a real project.

Honest limitations

  • The preview uses a sandboxed iframe. Features that require top-level navigation, popups, or certain permissions may be restricted by the browser.
  • External network requests (e.g., loading a font or script from a CDN) may or may not be allowed depending on the sandbox settings and your browser.
  • This is an editing and preview tool, not a full code editor with syntax highlighting, auto-completion, or file management.
  • Code is not saved between visits. Copy or download your work before closing the page.
  • There is no server-side validation or rendering — the preview reflects what your browser does with the markup.

Frequently asked questions

Is my code sent to a server?
No. The editor processes and previews your code entirely in your browser. Nothing is uploaded or stored on a server by this tool.
Can I use this offline?
Once the page has loaded, the core editor and preview work without an internet connection. Any external resources you reference in your own code will still require a connection.
Does the preview support JavaScript?
Yes, the iframe is configured to allow scripts. However, some browser security restrictions apply inside sandboxed frames.
Will my code be saved if I close the page?
No. There is no persistent storage. Use the Copy or Download buttons to keep your work.
Is there a character limit?
There is no imposed limit. Extremely large documents may slow down the live preview depending on your device.

Ready to try your first line of HTML?

Jump back to the editor and start building. No download, no signup.

Open the Editor