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XML to JSON Converter

Convert XML files and nested element schemas into formatted JSON data structures instantly client-side.

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Convert XML tags and nested element schemas into structured, validated JSON data strings instantly. Paste your XML tags, preview the output object mapping rules, and copy or download the pretty-printed JSON payload.

Learn About This Tool

Understanding XML to JSON element mapping rules

XML is a markup language defining hierarchical elements with attributes. Modern web apps and REST APIs prefer working with JSON structures because they map natively to JS objects. Our parser maps XML elements to JSON keys, tags with attributes to sub-properties, and duplicate sibling elements to array sequences. If you need to serialize JSON strings back to XML tags, use our JSON to XML Converter. Here is a standard translation sample:
<!-- XML Input -->
<catalog id="1">
  <book category="fiction">
    <title>Great Gatsby</title>
  </book>
</catalog>

// Converted JSON Output
{
  "catalog": {
    "@id": "1",
    "book": {
      "@category": "fiction",
      "title": "Great Gatsby"
    }
  }
}
  • Translates nested XML tags to child objects and list sequences
  • Prefixes element attributes with an '@' to distinguish properties
  • Aggregates duplicate child tags into structured JSON arrays automatically
  • Executes local DOM parsing using safe browser sandboxes

Managing XML attributes and duplicate elements arrays

XML elements frequently hold parameters (e.g. id="5" or active="true"). Our parser extracts these attributes as properties prefixed with @ so that no raw data is lost during the translation structure. If you are formatting your XML structures before conversion, try our HTML to Markdown Converter.
  • Translates inline attribute key-value pairs into nested properties
  • Combines siblings sharing the same tag name into indexable arrays
  • Strips empty text nodes and formatting spaces from parent keys
  • Normalizes text elements to keep the final JSON clean

Why security-first client-side parsing matters

XML payloads (such as API configs, RSS feeds, or database outputs) often contain system settings or confidential fields. Using remote API servers to translate this content is dangerous. Our parser runs completely in your local browser sandbox. If you are checking JSON strings for syntactic validity, pretty print them using our JSON Formatter & Validator.
  • Ensures that no XML structures ever leave your physical device
  • Zero network data payloads are sent to external backends
  • Prevents corporate parameter configs from being cached in logs
  • Enables high-performance client-side conversions instantly

How to Use XML to JSON Converter

1

Paste your raw XML markup tags

Paste your XML data into the XML Input editor on the left. The tool validates formatting in real-time.

2

Configure your parsing preferences

The converter handles nested child structures, converting duplicate tags to arrays and tracking attributes automatically.

3

Copy or download the compiled JSON

Review the formatted JSON output in the right panel. Click Copy to grab it or Download to save it locally as a .json file.

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Common questions

How do I convert XML to JSON online?

Paste your XML data into the input panel of our secure, client-side XML to JSON converter. The parser compiles the structure in real-time, allowing you to download the output as a .json file. If you need to convert JSON back to XML, use our JSON to XML Converter.

Is this XML to JSON converter secure for API configurations?

Yes, 100%. The conversion runs completely in your local browser sandbox using client-side JavaScript. No data is sent to external servers, protecting your credentials and system configs.

How does the tool handle XML attributes?

XML tag attributes (e.g. id="12" in <item id="12">) are extracted and prefixed with @ (e.g. "@id": "12") inside the output JSON object.

How are duplicate child tags parsed in JSON?

If an XML node contains multiple child elements sharing the same tag name, they are automatically aggregated and output as a JSON array of objects.

Does it validate XML syntax before converting?

Yes. If your XML is malformed (e.g. unclosed tags or mismatched elements), the browser-native parser will capture the syntax error and display a detailed validation banner.

Does it support XML namespaces?

Yes, namespace prefixes (e.g. <ns:tag>) are preserved and represented as standard object keys containing the prefix string.

What is the maximum XML file size limit?

Since parsing occurs locally in your browser, it is only limited by your device's memory. Large feeds exceeding 5,000 tags are processed instantly.

Does this tool use external servers or APIs?

No, it is 100% serverless. The tool parses the markup using browser-native DOMParser APIs, ensuring absolute local execution.

Can I load an example XML to test?

Yes, click the 'Example' option in the input toolbar to load a standard server configuration example containing nested children and attributes.

How are CDATA sections handled in the JSON output?

XML CDATA block sections (containing unparsed raw text) are parsed and output as standard JSON string values for their parent key.

Can I copy the output JSON instantly?

Yes. Click the Copy button in the JSON Output header, or use standard browser shortcuts to copy the compiled text instantly to your clipboard.

Does it format the output JSON string?

Yes, the JSON output is formatted as pretty-printed JSON with 2-space indentation by default, making it highly readable.

How does it handle self-closing XML tags?

Self-closing XML tags without child values (e.g. <status />) are parsed and represented as empty strings or null keys in the JSON output.

What browser APIs are used for this tool?

The tool uses the standard, optimized DOMParser API, which runs natively on all modern browsers without adding package weight.

Why does it show 'XML parsing error'?

This error occurs if your XML is malformed, has invalid markup characters, or does not wrap all sibling nodes in a single root element tag.

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