VISUALIZE HTML DOCUMENT STRUCTURE
HTML DOM Tree Viewer & Visualizer
Parse HTML into an expandable DOM tree showing elements, attributes and text nodes, with a structured JSON export for inspection.
Free to useNo sign-upPrivate browser processing
DOM Tree ViewerExpandable parsed document
Ready to parseBuild the tree to inspect elements, attributes and text.
TESTED & REVIEWED
Know what this tool does—and where to double-check
- Reviewed by
- HTML Online Viewer project
- Last reviewed
- Processing
- Ordinary processing happens in this browser tab; the tool does not intentionally upload your source.
- Important limitation
- Automated conversion may not preserve every unusual syntax or application-specific edge case. Keep a backup and test the result in its destination.
WHY USE IT
A focused tool for reliable HTML work
Follow parent, child and sibling relationships without reading deeply nested markup line by line.
Inspect element names, IDs, classes, accessible attributes and compact text-node values together.
Copy or download the parsed tree as JSON for debugging, teaching or documentation.
HOW IT WORKS
Three quick steps
- 01Paste HTML
Add a complete page or a smaller component fragment.
- 02Build the tree
Parse the source with the browser’s HTML parser and expand the nodes you want to inspect.
- 03Export if needed
Copy or download the generated DOM representation as JSON.
COMMON QUESTIONS
DOM Tree Viewer FAQ
Is the DOM tree identical to the original source?
The browser parser may insert implied elements or repair malformed markup, so the tree represents the parsed DOM rather than a character-for-character copy of the input.
Does the viewer run scripts in my HTML?
No. It parses the source as data and never executes scripts from it.
How large can the visualized tree be?
The interface limits output to the first 1,500 meaningful nodes so unusually large documents remain responsive.