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Live Preview

CSS Generators

Generate CSS with any tool below and insert it directly into your editor.

Quick Start Templates

Click a template to load a ready-made starter into the editor.

Free Online HTML, CSS & JavaScript Code Editor with Live Preview & PRO Mode

The makeCSS.com HTML, CSS & JavaScript Code Editor is a free browser-based code playground that lets you write HTML, CSS, and JavaScript side by side with an instant live preview. Whether you're prototyping a new component, testing a CSS snippet, adding interactive JavaScript, or learning web development — this editor gives you a fast, distraction-free workspace with zero setup.

Key Features

  • Three-tab editor – Write HTML, CSS, and JavaScript in separate tabs with a live preview panel updating in real time.
  • PRO mode – Full-screen layout showing all four panels (HTML, CSS, JS, Preview) simultaneously. Resize panels by dragging handles, reorder them with drag-and-drop, and customize your workspace exactly the way you like it.
  • Full Code view – See the complete combined HTML page with embedded <style> and <script> blocks at a glance. Fully editable — paste a full HTML page to auto-split into individual panels.
  • Syntax highlighting – Color-coded HTML tags, CSS selectors & properties, and JavaScript keywords, strings, comments — inspired by VS Code's Dark+ theme.
  • 6 starter templates – Card Component, Hero Section, Pricing Table, Glassmorphism Card, Flexbox Navigation, and CSS Grid Gallery.
  • Tag-wrap toggles – Include <style> or <script> wrapper tags when copying CSS or JavaScript code.
  • Integrated CSS generators – Open any makeCSS generator (box-shadow, gradient, border-radius, glassmorphism, and more) and insert generated CSS directly into your editor.
  • HTML5 boilerplate – Insert a complete HTML5 document skeleton with one click.
  • One-click copy & download – Copy just the HTML, CSS, JS, or the full combined page. Download as a ready-to-use .html file.
  • Flexible layouts – Switch between side-by-side split view and stacked top-bottom view in standard mode.
  • Auto-run or manual mode – Preview updates automatically as you type, or switch to manual mode and click Run when ready.
  • Open preview in new tab – Launch your creation in a full browser tab for pixel-perfect inspection.
  • localStorage persistence – Your code and layout settings are saved automatically and survive page reloads.
  • Tab key support – Press Tab to indent code, just like in a desktop editor.

Who is this for?

This editor is ideal for web developers prototyping UI components, designers experimenting with CSS effects, students learning HTML, CSS, and JavaScript fundamentals, and anyone who needs a quick code sandbox without installing anything.

How to use

  1. Type or paste your HTML in the HTML tab, your CSS in the CSS tab, and your JavaScript in the JS tab.
  2. Watch the Live Preview panel update instantly on the right (or below on mobile).
  3. Click PRO MODE to open the full-screen 4-panel editor. Resize and reorder panels to match your workflow.
  4. Click the Full Code tab to see the complete combined document — or paste a full HTML page to auto-split it.
  5. Click Copy HTML, Copy CSS, Copy JS, or Copy Full Page to grab your code.
  6. Click Download to save a complete .html file to your computer.

No signup, no account, no tracking. 100% free. All processing happens locally in your browser — your code is never sent to any server.

Frequently Asked Questions

Is this HTML, CSS & JavaScript editor free to use?

Yes. The makeCSS.com HTML, CSS & JavaScript Code Editor is 100% free with no signup, no account, and no usage limits. Write, preview, copy, and download code as much as you like.

What is PRO mode?

PRO mode is a full-screen editor layout that shows all four panels (HTML, CSS, JavaScript, and Live Preview) simultaneously. You can resize panels by dragging handles, reorder them with drag-and-drop, and toggle a Full Code bottom panel — all in a single workspace.

Does the editor support live preview?

Yes. The editor includes an instant live preview panel that updates automatically as you type. You can also switch to manual run mode and click the Run button to update the preview on demand.

What is the Full Code view?

The Full Code view shows the complete combined HTML document with embedded CSS and JavaScript. It is fully editable — you can paste a full HTML page and it will auto-split into the HTML, CSS, and JS panels automatically.

Can I copy or download the code I write?

Absolutely. You can copy just the HTML, CSS, JS, or the full combined page to your clipboard with one click. Tag-wrap toggles let you include <style> or <script> tags automatically. There is also a Download button that saves the complete page as an .html file.

Does it work on mobile devices?

Yes. The standard editor is fully responsive and works on smartphones and tablets. On smaller screens the editor and preview panels stack vertically for easy use.

Does the editor have syntax highlighting?

Yes. The editor features real-time syntax highlighting for HTML, CSS, and JavaScript. Tags, attributes, selectors, properties, values, keywords, strings, and comments are each colored differently using a VS Code Dark+ inspired theme.

Can I use CSS generators inside the editor?

Yes. The editor integrates all makeCSS.com CSS generators (box-shadow, gradient, border-radius, glassmorphism, and more). Open any generator, adjust the settings, and click "Insert into Editor" to add the generated CSS directly into your code.

What are the starter templates?

The editor includes 6 ready-made templates: Card Component, Hero Section, Pricing Table, Glassmorphism Card, Flexbox Navigation, and CSS Grid Gallery. Click any template to load its HTML, CSS, and JavaScript into the editor instantly.