HTML Live Editor

HTML Live Editor

Write HTML, CSS, and JavaScript in the three boxes and see the result instantly. Use your own code only: the preview runs your script on this page.

The HTML Live Editor is a small playground for web code: three panels for HTML, CSS, and JavaScript, and a preview that updates as you type. It is the quickest way to test a button style, try a layout idea, check a snippet from a tutorial, or show a beginner how the three languages fit together, without setting up files or a server.

Your code is combined into a single document and loaded into the preview frame on this page. Typing pauses briefly and then refreshes the preview automatically, and the Run button refreshes it on demand. A working starter example is preloaded so you can see cause and effect immediately: change the heading colour in the CSS panel and watch the preview obey.

An honest safety note, also shown above the editor: the preview executes your JavaScript on this page, so only run code you wrote or trust, exactly as you would in a browser console. Nothing you type is uploaded or saved; closing the page wipes the slate clean.

How to use

  1. Edit the HTML panel to change content and structure.
  2. Edit the CSS panel to change colours, spacing, and layout.
  3. Edit the JavaScript panel to add behaviour.
  4. Watch the preview update automatically, or click Run to refresh it.
  5. Use Clear All to start from an empty page.

Frequently asked questions

Is my code saved anywhere?

No. The editor keeps everything in the page's memory. Refreshing or leaving the page discards your code, so copy anything you want to keep into your own files.

Can I use external images or links in the preview?

Yes. Full URLs to images and stylesheets work in the HTML panel, provided the site you load from allows hotlinking and you have an internet connection.

Why does the preview refresh while I type?

Live feedback is the point of the tool. It waits for a short pause in typing before rebuilding the preview so it does not flicker on every keystroke.

Is it safe to paste code from the internet?

Only paste code you trust. The preview runs scripts with the page's privileges, like a console does. Treat unknown snippets with the same caution.