Live Code Editor
A free online code editor — write HTML, CSS & JavaScript and see a live preview instantly. A fast, no-login CodePen alternative that runs right in your browser.
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A free online code editor and CodePen alternative
This online code editor lets you write HTML, CSS and JavaScript together and watch the result render in a live preview as you type — no setup, no install, no account. Think of it as a fast, lightweight CodePen-style playground that opens instantly in your browser. Whether you are prototyping a component, testing a snippet from Stack Overflow, teaching, or learning to code, you can go from idea to working demo in seconds.
The default modern view is a split-screen IDE — your code on the left with HTML, CSS and JS tabs, and a real browser-style live preview on the right. Prefer everything on one screen? Switch to classic view, or open focus mode to expand the workspace full-screen and lock out page scrolling while you code. Everything runs locally in your browser, so your code stays private.
How to use the live code editor
1 · Write your code
Type HTML, CSS and JavaScript, or pick a Quick Template to start from a working example.
2 · See it live
The preview updates instantly as you type. Use Run to re-execute scripts or Reload to refresh the browser panel.
3 · Focus & iterate
Switch between modern and classic layouts, or enter focus mode for a distraction-free, full-screen workspace.
Why use this online code editor?
- Modern split-screen IDE — code on the left, a live browser-style preview on the right.
- Instant & no login — open the page and start coding; nothing to install or sign up for.
- Real-time preview — HTML, CSS and JS combine into a live result as you type, external images and scripts included.
- Focus mode — full-screen workspace that locks page scrolling so you can concentrate on code.
- Nine starter templates — forms, cards, animations, a modal, an image gallery, a to-do app and more.
- Private & responsive — your code runs in your browser and the layout works on any device.
Who uses a code playground like this?
Developers
Prototype a component or reproduce a bug in seconds, without spinning up a project.
Students & learners
Practise HTML, CSS and JavaScript with instant feedback — the fastest way to learn front-end.
Teachers & interviewers
Demonstrate concepts live or run quick front-end coding exercises with no setup.
Frequently asked questions
Is this online code editor free?
Yes — completely free, with no login, no signup and no usage limits. Open the page and start writing HTML, CSS and JavaScript straight away.
Do I need an account to use it?
No. You can code and see the live preview instantly without signing in — a fast, no-login CodePen alternative that runs in your browser.
Does my code stay private?
Yes. Everything runs locally in your browser; your HTML, CSS and JavaScript are not uploaded to any server.
What is the difference between modern and classic view?
Modern view is a split-screen IDE — code on the left with HTML/CSS/JS tabs and a live browser-style preview on the right. Classic view stacks the three editors above the preview. Focus mode expands the workspace to fill the screen and locks page scrolling.
Can I use the starter templates?
Yes — choose from nine ready-made templates and edit them however you like: basic page, contact form, card, CSS animation, responsive grid, interactive button, modal, image gallery and a to-do app.
Does it work on mobile?
Yes. The editor is fully responsive; the split view stacks on smaller screens so you can write code and preview it on a phone or tablet.
Is this the same as CodePen?
It is an independent, free online code editor inspired by the same idea — a quick HTML, CSS and JavaScript playground with instant preview. It is not affiliated with CodePen; it is a lightweight alternative for fast testing and learning.
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