Convert HTML to JSON Online
Transform HTML structures like lists or tables into JSON format. This converter parses HTML elements and creates a structured JSON output for easy data use.
HTML to JSON Converter
Convert HTML code into a JSON structure
Example Conversion
<ul> <li>Item 1</li> <li>Item 2</li> </ul>
{
"tag": "ul",
"children": [
{
"tag": "li",
"children": ["Item 1"]
},
{
"tag": "li",
"children": ["Item 2"]
}
]
}How the HTML to JSON Converter Works
This tool transforms HTML structure into a JSON representation. It parses HTML elements and creates a tree structure showing tags, attributes, and children. The JSON output can be used for programmatic processing, data analysis, or storage in JSON-based systems.
Conversion Process
- Paste your HTML code into the input area
- Choose output format: Pretty Print (formatted) or Compact (single line)
- Click "Convert" to parse the HTML
- The DOM is traversed and each element becomes a JSON object
- Tags are stored in the "tag" field
- Attributes are stored in the "attributes" object
- Child elements are stored in the "children" array
- Copy the JSON or download as a .json file
Specific Use Cases
Web Scraping Data Processing
A developer scrapes HTML content and converts it to JSON for easier processing. JSON structure allows programmatic access to specific elements and attributes.
Content Management Systems
A CMS stores content as JSON for database compatibility. Converting HTML to JSON allows structured storage while preserving document hierarchy.
API Response Transformation
An API returns HTML content that needs to be processed by a mobile app. Converting to JSON makes the data easier to parse in mobile environments.
HTML Structure Analysis
A developer analyzes HTML structure programmatically. The JSON representation makes it easy to count elements, find patterns, or extract specific data.
Testing and Automation
A QA engineer converts HTML snapshots to JSON for comparison testing. JSON diffs are easier to read than HTML diffs for automated testing.
What to Know Before Using This Tool
Understanding HTML to JSON conversion:
- Each HTML element becomes an object with tag, attributes, and children
- Text nodes become string values in the children array
- Elements without attributes omit the attributes field
- Pretty Print adds indentation for readability
- Compact format minimizes file size
- The conversion is one-way (HTML to JSON, not reversible)
Frequently Asked Questions
What does the JSON structure look like?
Each element has a "tag" field (e.g., "div"), an optional "attributes" object, and a "children" array containing nested elements or text strings.
Can I convert JSON back to HTML?
This tool only converts HTML to JSON. For the reverse, you'd need a separate JSON-to-HTML converter or write a function to reconstruct HTML from the JSON structure.
What happens to HTML comments?
HTML comments are typically not preserved in the JSON output since they don't map to DOM elements. The conversion focuses on element structure.
How are self-closing tags handled?
Self-closing tags like <img /> or <br /> become objects with just the tag and attributes. They have empty or no children arrays.
Is the conversion lossless?
The structural information is preserved, but formatting (whitespace, attribute order) may change. The JSON can represent the same content but won't produce identical HTML if converted back.
What about invalid HTML?
The browser's DOM parser handles invalid HTML by attempting to fix it. The JSON output reflects the parsed DOM, which may differ from your input if the HTML has errors.
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