How do I test HTML code online for free?

Simply paste your HTML code into the editor on the left side, and you'll see the live preview instantly on the right. Our tool is 100% free with no signup required - just start coding!

Can I use CSS and JavaScript in this HTML editor?

Yes! You can include CSS in tags and JavaScript in tags within your HTML. The preview supports full HTML5, CSS3, and modern JavaScript including ES6+ features.

Is this online HTML editor really free?

Yes! This HTML editor and preview tool is completely free to use with no hidden costs, no signup required, and no usage limits. Use it as many times as you need.

Why is my JavaScript not working in the preview?

Make sure your code is wrapped in tags and check the browser console (F12) for errors. The preview uses sandbox mode for security, which allows scripts but restricts certain operations like accessing parent window.

Can I use external libraries like Bootstrap or jQuery?

Yes! You can include external libraries using CDN links in your HTML. Add or tags pointing to the CDN URLs in the section of your HTML.

Is my code saved automatically?

Yes, your code is automatically saved to your browser's local storage. It will persist even after you close the browser, but only on the same device and browser. You can also download your HTML file for backup.

Can I download my HTML code?

Yes! Click the "Download" button to save your HTML as a file to your computer. The file will be named "html-preview.html" and can be opened in any browser.

What does the Format button do?

The Format button automatically indents and organizes your HTML code for better readability. It uses js-beautify to properly format tags, attributes, and nested elements - great for cleaning up messy code.

Does this HTML editor work offline?

Yes! Once the page is loaded, the editor and preview functionality work completely offline. However, external resources (CDN libraries, images from URLs) will still need internet access.

Can I preview responsive designs?

Yes! You can use CSS media queries in your code to create responsive designs. The preview iframe will render your code just like a regular browser window. Resize your browser to test different screen sizes.

Is my code private and secure?

Absolutely! All code processing happens locally in your browser. No code is ever sent to any server, stored, or logged. Your code remains completely private.

Can I share my HTML code with others?

Currently, you can download your HTML file and share it manually via email, messaging, or file sharing services. Use the "Download" button to save your work.

Free Online HTML Editor & Live Preview

Free online HTML editor with live preview. Write and test HTML, CSS, JavaScript code in real-time. No signup required - instant results, auto-save, and works offline.

HTML Code

Preview Result

Free Online HTML Editor & Live Preview Tool Introduction

Looking for a free online HTML editor with live preview? Our powerful tool lets you write and test HTML, CSS, and JavaScript code in real-time - completely free with no signup required. Whether you're a beginner learning web development or an experienced developer prototyping ideas, this tool provides an instant, hassle-free environment to experiment with your code.

Perfect for quick prototyping, learning web development, debugging front-end code, or sharing code snippets with colleagues. No installation required - just paste your code and see instant results in the preview pane.

Our HTML preview tool features a professional code editor with syntax highlighting, auto-completion, and line numbers. The split-screen layout lets you write code on the left and see the live preview on the right, making it easy to iterate and refine your designs.

All your work is automatically saved to your browser's local storage, so you never lose your progress. You can also download your HTML files, format messy code with one click, and even load example code to get started quickly. Works offline once loaded!

Free Online HTML Editor & Live Preview User Guide

Getting Started

Using our HTML preview tool is simple and intuitive. Follow these steps to start creating and testing your HTML code:

Basic Usage

Write Code: Enter your HTML code in the left editor panel. The editor supports syntax highlighting and auto-completion to help you write code faster.
Real-time Preview: See your code rendered instantly in the right preview panel. Changes appear immediately as you type.
Copy Code: Click the copy button in the top-right corner of the editor to copy your code to the clipboard.
View Character Count: The bottom-right corner shows the total character count of your code.

Toolbar Functions

Example Code: Click to load a sample HTML page with CSS and JavaScript to see how everything works together.
Format: Automatically indent and organize your HTML code for better readability. Uses js-beautify for professional formatting.
HTML Unescape: Convert HTML entities (like <, >) back to their original characters (<, >). Useful for converting escaped HTML.
Download: Save your HTML as a file to your computer. The file will be named "html-preview.html".
Clear: Remove all code from the editor to start fresh.

Key Features

Professional Code Editor: Powered by CodeMirror with syntax highlighting, line numbers, and code folding.
Real-time Preview: See changes instantly as you type, no refresh needed.
Auto-save: Your code is automatically saved to browser storage, so you never lose your work.
Code Formatting: One-click formatting to make your code clean and readable.
HTML Unescape: Convert escaped HTML entities back to regular HTML.
Download Files: Export your HTML to a file for use in other projects.
Interactive JavaScript: Full support for JavaScript with event handlers and DOM manipulation.
External Resources: Include external CSS and JavaScript libraries via CDN links.
Responsive Design: Works perfectly on desktop, tablet, and mobile devices.

Tips & Tricks

Use the example code as a starting point to learn HTML structure.
Format your code regularly to maintain readability, especially when working with complex layouts.
Test responsive designs by including CSS media queries in your code.
Use the browser's developer tools (F12) to debug JavaScript errors in the preview.
Include external libraries like Bootstrap or jQuery using CDN links in the <head> section.

Frequently Asked Questions

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