Drop your HTML file here
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.html
.htm
.xhtml
View HTML source with syntax highlighting
View HTML files with syntax highlighting, live preview, and tag analysis. Free, fast, and secure browser-based viewer.
or click to browse files
HTML tags, attributes, strings, and comments are color-coded for easy reading
See how your HTML renders in a sandboxed preview iframe
View element count, unique tags, line count, and file size
All processing happens in your browser - files never leave your device
This viewer supports viewing HTML from various sources:
This viewer supports .html, .htm, and .xhtml files. It works with HTML5, XHTML, and older HTML versions. The viewer automatically detects and highlights the syntax regardless of the HTML version used.
Yes! The preview is rendered in a sandboxed iframe that prevents JavaScript execution and external resource loading. This ensures that any potentially malicious code in the HTML file cannot harm your browser or access your data.
Yes, your HTML files are completely secure. All file processing happens locally in your browser using JavaScript. Your files are never uploaded to any server, ensuring complete privacy for your web pages and templates.
Source: Shows HTML with syntax highlighting for tags, attributes, strings, and comments. Preview: Renders the HTML in a sandboxed iframe to show how it would look in a browser. Structure: Shows an analyzed breakdown of elements, tags, and document structure.
The viewer can handle HTML files up to 10MB. Larger files may cause performance issues in your browser. For very large HTML files, consider splitting them or using a desktop code editor.
This is a read-only viewer designed for viewing and analyzing HTML files. To edit HTML, you'll need to use a text editor or IDE. You can export the file and edit it in your preferred editor.