Merakesh
100% FREE TOOL

HTML ViewerHTML Viewer

Free Online HTML Viewer and Preview Tool — Easily view, edit, and format your HTML code online

Preview HTML instantly
100% browser-based processing
Import & Export HTML
Format & Highlight HTML

Editor

Preview

File Operations

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Frequently Asked Questions

What is an HTML Viewer?

An HTML Viewer is a tool that allows you to paste or import HTML code and see how it would render in a web browser. It helps developers, designers, and content creators preview their HTML code without setting up a local environment or publishing to a server. Our HTML Viewer adds additional features like structure highlighting, code formatting, and DOM tree visualization to help you better understand and work with your HTML.

How do I use the HTML Viewer tool?

Using our HTML Viewer is simple:

  1. Paste your HTML code into the editor, or use the Import button to upload an HTML file
  2. Click the "In-Page Preview" tab or button to see how your HTML renders
  3. Use the "Highlight" button while in preview mode to visualize the HTML structure
  4. Click "Format" to beautify and indent your HTML code properly
  5. Use the "DOM Structure" tab to explore the DOM tree of your HTML
  6. The "Export" button lets you download your HTML as a file

Is the HTML Viewer tool free to use?

Yes, our HTML Viewer is completely free to use. There are no hidden charges, subscriptions, or limitations. We believe in providing high-quality developer tools that are accessible to everyone.

Is my HTML code secure when using this tool?

Absolutely. All processing happens directly in your browser. Your HTML code is never sent to our servers, ensuring complete privacy and security. We have designed this tool with a focus on client-side processing, meaning your code stays on your device at all times.

What's the difference between 'In-Page Preview' and 'Full Page Preview'?

The 'In-Page Preview' shows your rendered HTML directly within the tool interface, making it easy to switch between editing and previewing. The 'Full Page Preview' opens your HTML in a new browser tab, giving you a full-page view that's useful for testing responsive designs, interactions, or simply seeing your HTML in a standalone environment.

What does the 'Highlight' button do?

The 'Highlight' button adds visual outlines to all HTML elements in the preview. This helps you visualize the structure of your page, identify containers, and understand element boundaries. It's particularly useful for debugging layout issues or understanding complex HTML structures. When you hover over elements while highlight is active, you'll see enhanced outlines that make element inspection easier.

What is the 'DOM Structure' tab for?

The 'DOM Structure' tab displays an interactive DOM tree of your HTML document. This visualization helps you understand the hierarchy of elements, their nesting, and attributes. You can expand and collapse nodes to explore different levels of the document structure. This is especially useful for analyzing complex HTML documents or understanding the relationship between different elements.

What HTML features are supported?

Our HTML Viewer supports all standard HTML5 features, including CSS styling, embedded scripts (with sandbox protection), and responsive layouts. You can preview complex HTML documents with modern features, though for security reasons, some features like external resource loading may be restricted in the preview iframe. For full functionality testing, we recommend using the 'Export' feature and then opening the file in your preferred browser.