Instant Live Preview
Every keystroke in the HTML, CSS or JavaScript panel is rendered immediately in the preview frame, so you can iterate on layout, styling and logic without reloading a page.
Online Code Editor
Write and test HTML, CSS and JavaScript directly in your browser with a split-screen workspace. Switch between three editor tabs, watch the live preview refresh as you type, and load, copy or download your files whenever you are ready.
Quick answer: TechnoZaibi's Online Code Editor is a free browser-based HTML, CSS and JavaScript playground with instant live preview — no installation, no account and no code ever leaves your device.
Open it in Desktop View for a better experience
Live Preview
Free Online Code Editor
A complete front-end playground that runs entirely inside your browser tab.
Three Editors, One Workspace
Switch between dedicated tabs for markup, styles and scripts using the tab bar, keeping each language separate and readable on a single screen.
Load, Copy & Download
Import an existing .html, .css or .js file, copy any panel with one click, or export everything as a single self-contained HTML document.
Private and Free Forever
Your code is processed locally by your browser and is never uploaded to a server. There is no signup, no watermark and no usage limit.
How to Use the Online Code Editor
Start coding in four simple steps.
1. Pick a Tab
Use the HTML, CSS or JavaScript tab to choose which part of the project you want to edit.
2. Write Your Code
Type directly into the editor. The live preview panel on the right refreshes instantly as you work.
3. Load or Refine
Click Load File to import an existing HTML, CSS or JS file — inline styles and scripts are separated into the correct editors automatically.
4. Copy or Download
Grab a single panel with its Copy button, or hit Download All to save a ready-to-run index.html.
Online Code Editor FAQ
Common questions about the online code editor.
Is this online code editor free?
Yes. The editor is completely free to use with no signup, no hidden limits and no watermarks on exported files.
Do I need to create an account?
No account is required. Open the page, start typing and your work is ready to copy or download straight away.
Is my code uploaded to a server?
No. All parsing, previewing and exporting happens locally in your browser, so your code never leaves your device.
Can I load an existing HTML file?
Yes. Click Load File and choose an .html, .css or .js file. Inline <style> and <script> blocks are extracted into the matching editors.
How do I save my project?
Use Download All to export a single index.html with your CSS and JavaScript embedded, ready to open in any browser.
Does it work on mobile devices?
Yes, the layout stacks vertically on small screens, though a desktop or tablet gives you much more room to code comfortably.