Online HTML Editor with Instant Live Preview

Write or paste HTML and see the rendered page update in about one second — no save button, no reload. This free browser-based editor pairs your markup with CSS and JavaScript tabs, so you can build, test and download complete web pages without installing anything or creating an account.

Open the free editor

What makes this HTML editor different

Preview updates while you type

A 1-second debounce watches your keystrokes and re-renders the result automatically. You never switch windows or press Run — the preview is always current with your markup.

Emmet abbreviations built in

Type ul>li*3 and press Tab to expand a full list, wrap selections with any abbreviation, and rename both halves of a tag pair at once — the same workflow professionals use in VS Code.

Auto-closing and matching tags

Closing tags are inserted for you, matching tags are highlighted as your cursor moves, and the editor completes tag names from a curated snippet list to keep your markup valid.

Full HTML document support

Start with a fragment or a complete document including <!DOCTYPE html>, <head> and <body>. The preview handles both, and exports keep the structure intact.

Download and share in one click

Export a clean, standalone .html file with your CSS and JavaScript inlined, grab a ZIP with separate index.html, style.css and script.js files, or save the project and send a link.

Works on your phone

A floating live-preview bubble shows the running result while you edit on mobile, so you can test HTML changes on the go without switching tabs back and forth.

How to run HTML online in 4 steps

  1. 1

    Open the editor — the HTML tab is already active with a small demo page you can keep, edit or replace.

  2. 2

    Type or paste your markup. The preview pane re-renders automatically about a second after you stop typing.

  3. 3

    Add styling and behaviour in the CSS and JS tabs, or link external stylesheets and scripts inside your markup.

  4. 4

    Download the finished page as HTML or ZIP, or hit Save to get a shareable link that opens your exact project.

Questions this tool answers

Frequently asked questions

Is this HTML editor really free?

Yes. The editor, live preview, downloads and share links are completely free with no account, no trial and no usage limits. Your code is stored in your own browser, not on our servers.

How fast does the live preview update?

About one second after you stop typing. The delay is a deliberate debounce so the preview does not flicker on every keystroke; you can switch it to 0.5s or 2s in the toolbar, or turn auto-run off and press Run yourself.

Can I use this HTML editor offline?

Once the page has loaded, everything runs locally in your browser: editing, previewing and downloading all keep working if your connection drops, and your work is auto-saved to your device.

Does it support complete HTML documents with head and body?

Yes. You can paste a full document starting with <!DOCTYPE html> or just a fragment. The preview injects your CSS and JavaScript correctly in both cases.

How do I download my HTML file?

Use the Download menu in the toolbar: choose a single HTML file with everything inlined, or a ZIP containing index.html, style.css and script.js — ready to host anywhere or open directly in a browser.

Do I need to install anything?

No. The editor runs entirely in a modern browser tab on Windows, macOS, Linux, Android or iOS. There is nothing to install, configure or sign up for.