HTML To JSON Converter
Convert HTML markup into a JSON tree structure in the browser
What is HTML to JSON conversion?
This tool walks the DOM tree of your HTML snippet and outputs a JSON structure: element names, attributes, text nodes, and nested children. It is useful for prototyping parsers, debugging markup, or feeding structured data to scripts and tests.
How this tool works
Your HTML is parsed with the browser’s HTML parser (via a template element). Comments are skipped; text nodes are trimmed.
A single top-level node becomes one JSON object; multiple siblings are wrapped in a nodes array.
Limits
- Browser parsing may normalize malformed HTML; results reflect the DOM, not necessarily the original source spacing.
- Very large documents can be slow; paste focused fragments for best performance.
Frequently Asked Questions
Does this execute JavaScript inside the HTML?
Parsing alone does not run scripts the way a full page load would, but avoid pasting untrusted HTML in any tool. Treat input as potentially unsafe.
Can I convert JSON back to HTML?
This tool is one-way. Rebuilding HTML from JSON requires a custom serializer or a different utility.
Where is my markup processed?
Entirely in your browser; nothing is uploaded to our servers.
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