HTML Viewer
Preview and format HTML code with live rendering, interactive JavaScript, and syntax highlighting. Paste your HTML to see it rendered instantly with full interactivity and beautified with proper indentation.
HTML Input
Features
Live Interactive Preview
See your HTML rendered in real-time with full JavaScript support. Test games, animations, and interactive elements instantly in a secure, isolated iframe.
Code Formatting
Automatically beautify and format your HTML with proper indentation, making it easy to read and understand the structure.
Syntax Highlighting
Color-coded HTML syntax highlighting helps you identify tags, attributes, values, and comments at a glance.
Code Statistics
Track character count, line count, and word count in real-time to monitor your HTML document size.
Export Options
Copy formatted HTML to clipboard with one click or download it as an .html file for use in your projects.
Sample Content
Load a sample HTML document to explore the tool's features and see how it handles different HTML structures.
Frequently Asked Questions
Is my HTML code safe when using this tool?
Yes, absolutely. All HTML processing happens locally in your browser. Your code is never uploaded to any server, ensuring complete privacy and security. The preview iframe is sandboxed to prevent form submissions, popups, and navigation while allowing interactive JavaScript to run safely.
Can I preview interactive HTML with JavaScript?
Yes! The preview fully supports JavaScript including games, animations, and interactive elements. Inline and embedded scripts work perfectly. However, external resources (stylesheets, scripts, images from other domains) may not load due to CORS restrictions. For best results, use self-contained HTML with inline styles and scripts.
What's the difference between Preview and Formatted Code tabs?
The Preview tab shows how your HTML will render in a browser, while the Formatted Code tab displays the beautified HTML source code with syntax highlighting and proper indentation.
Can I use this tool to validate HTML?
This tool is primarily for viewing and formatting HTML. While it will display rendering errors visually in the preview, it's not a validator. For HTML validation, use dedicated validation tools.
Does the formatter work with minified HTML?
Yes! The formatter is designed to beautify even heavily minified HTML, adding proper line breaks and indentation to make the code readable.