HTML Viewer

View and inspect formatted HTML source code with clean indentation and tag hierarchy.

100% Client-Side Local Execution

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<article><header><h1>Article Title</h1></header><section><p>Body content goes here.</p></section></article>

<article><header><h1>Article Title</h1></header><section><p>Body content goes here.</p></section></article>

This preview runs any JavaScript in your HTML. Only preview HTML you trust — scripts can make network requests or open popups.

What is HTML Viewer?

The HTML viewer lets you inspect HTML source code in a structured, readable way, useful for reviewing view-source output, scraped markup, or an email template's raw HTML without opening dev tools. As an html source code viewer it's focused on reading and exploring markup, not editing or rendering it live.

Technical Execution

It parses the HTML into a structural representation and displays it with syntax highlighting distinguishing tags, attributes, and text content, with the ability to expand or collapse nested sections much like a DOM tree inspector.

Zero Data Storage Guarantee

Viewing happens entirely in your browser — HTML source you're inspecting, including internal tool markup or client email templates, is never sent to a server.

How to Use HTML Viewer (Step-by-Step Guide)

Paste the HTML source code you want to inspect
Browse the syntax-highlighted, structured view
Expand or collapse nested elements to navigate the structure
Inspect tag attributes and nested content at each level
Copy specific sections of the markup as needed

Frequently Asked Questions (FAQ)

Q: Can I view HTML source online without browser dev tools?

A: Yes, paste the markup here for a clean, structured view without needing to open your browser's inspector panel.

Q: How is this different from the HTML formatter?

A: The viewer is built for browsing and inspection with highlighting and tree navigation; the formatter outputs reflowed text meant to be copied elsewhere.

Q: Does it render the HTML visually, or just show the source?

A: It's focused on showing structured source code rather than rendering the page, so you can inspect markup without executing any embedded scripts.

Q: Can I inspect email template HTML with this?

A: Yes, that's a common use case since email HTML is often dense with inline styles and nested tables that are easier to read in a structured view.

Q: Is viewing HTML source here private?

A: Yes, everything happens client-side with nothing uploaded to a server.

Q: Does the HTML tree viewer show attributes clearly?

A: Yes, tag attributes are displayed alongside each element so you can review classes, IDs, and other attributes without scanning a long attribute string.

Q: What happens if the HTML is malformed?

A: The parser applies standard browser error-recovery rules, so most real-world markup displays reasonably even if not strictly valid.

Q: Is there a size limit for viewing HTML source?

A: No fixed limit, though very large pages may take a little longer to render fully in the structured view.

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