XML to JSON Converter
Runs 100% in your browserConvert XML to readable JSON in your browser with attribute mapping, namespace options, repeated-element arrays, mixed-content handling, formatting controls, and local file support.
Supports XML declarations, attributes, namespaces, nested elements, CDATA, comments, and repeated sibling nodes.
Your JSON output will appear here.
XML and JSON model data differently
XML attributes are mapped explicitly, repeated sibling elements become arrays, and mixed text is stored under _text when an element also has child elements. Review the mapping options before using the output in an API or application. Values remain strings — XML has no universal type mapping.
Recent conversions
XML parsing and JSON serialization run in your browser. No XML is uploaded, sent to an API, stored in localStorage, or included in analytics. Disconnect your internet after page load and the tool works identically.
Frequently asked questions
An XML to JSON converter maps an XML document into JSON data. Elements become object properties, repeated elements can become arrays, attributes can be prefixed or grouped, and mixed text can be represented explicitly so the result can be used in an API, application, or data workflow.
Paste XML into the input panel or choose a local XML file, select the attribute, namespace, repeated-element, root, and indentation settings, then choose Convert to JSON. The conversion runs in your browser and the JSON result can be copied or downloaded.
ToolsSonic supports three attribute modes. Prefix mode writes an attribute such as id as @id, grouped mode places attributes under _attributes, and ignore mode omits attributes. Choose the mode that best matches the JSON schema expected by your application.
When repeated elements have the same name under one parent, the default arrays mode collects their values into a JSON array. For example, two item elements become an item array. A keep-last option is available for compatibility with workflows that expect only the final value.
Yes. Preserve prefixes keeps names such as book:title so namespace context remains visible in the JSON keys. The local-name option removes prefixes and uses names such as title, which can be convenient when the receiving JSON schema does not use namespace-qualified names.
If an XML element contains both child elements and meaningful text, the text is stored under _text so it is not silently discarded. This makes mixed content visible for review, although a domain-specific transformation may still be needed for documents such as XHTML, legal text, or rich narratives.
The browser XML parser resolves standard XML entities and exposes CDATA content as text. CDATA markers are not included in the JSON output. Review text containing markup carefully because XML-to-JSON conversion changes the container format rather than sanitizing or validating application content.
Yes. Select a local .xml file and the browser reads it with FileReader. The file is not sent to a conversion server or stored in persistent browser storage. Large files still consume memory while the DOM parser and JSON output are created.
Yes. Keep root element wraps the result under the XML root name, while Unwrap root object returns the root value directly. Keeping the root is often safer when multiple document types share a conversion pipeline.
Yes. Choose 2 spaces, 4 spaces, tabs, or Compact indentation. The same parsed data is serialized with the selected formatting and the output byte count is shown for comparison.
The converter stops before creating JSON and displays a parser diagnostic. Common causes include an unclosed tag, mismatched element names, invalid attribute quotes, duplicate root elements, or malformed entity references. Fix the XML and convert again.
Yes. Parsing and serialization happen locally in browser memory. ToolsSonic does not upload the XML, call a conversion API, or persist the input in localStorage or sessionStorage. Avoid pasting secrets into any shared or untrusted device.
Attributes are preserved in the JSON output using a consistent convention so no information from the XML document is lost. Convert a small sample first to see the exact shape the converter produces.
Yes. Any well-formed XML converts, including SOAP envelopes and RSS or Atom feeds — a quick way to work with legacy APIs in modern JSON tooling.
The converter reports a parse error instead of producing broken JSON. Check for unclosed tags, stray ampersands, and mismatched quotes — the three most common causes.
Yes. Load the file and it is read and converted locally; download the JSON result when done. Nothing is uploaded.
Most modern tooling — JavaScript, REST APIs, config systems — speaks JSON natively. Converting once lets you use JSON tools for querying, diffing, and formatting.
Everything runs locally in your browser with no upload, no account, and no logging. You can confirm in your browser DevTools Network tab that no request carries your data.
What is XML to JSON Converter?
What Is an XML to JSON Converter?
An XML to JSON converter maps an XML document into structured JSON data. Elements become JSON object properties, repeated sibling elements become arrays, attributes can be prefixed with @ or grouped under _attributes, and mixed element text is stored under _text so it is not silently discarded. The conversion is essential whenever a tool, API, or application expects JSON input but the source data arrives as XML — SOAP web services, RSS feeds, KML geographic data, Maven and Gradle build files, Android resource files, JAXB output, configuration files, and catalog documents all use XML as their serialization format.
How ToolsSonic Converts XML to JSON
ToolsSonic uses the browser's native DOMParser to validate the document before any JSON is produced. Malformed XML — unclosed tags, mismatched element names, invalid attribute quotes, or duplicate root elements — stops the conversion and shows the exact parser diagnostic instead of producing partial or misleading output. Only after the document passes XML validation does the converter walk the DOM tree and serialize each node.
Attribute mapping is explicit. Choose *Prefix as @attribute* to write id="b1" as "@id": "b1", choose *Group under _attributes* to collect all attributes into one object, or choose *Ignore attributes* when the downstream schema cares only about element values. Many XML-to-JSON libraries make this choice silently — ToolsSonic makes it visible so the output matches the schema your application expects.
Namespace handling gives you two options. *Preserve prefixes* keeps qualified names such as book:title so namespace context remains visible in the JSON keys. *Use local names* strips the prefix and writes title, which is convenient when the receiving schema uses unqualified names.
Repeated elements are converted to arrays by default. Two <item> children of the same parent become "item": [{...}, {...}]. A *Keep last value* option is available for compatibility workflows that expect only the final element.
Root element handling lets you keep the wrapper or unwrap it. Keeping the root is safer when multiple document types pass through the same pipeline. Unwrapping is convenient when the root name carries no semantic value.
JSON formatting supports 2 spaces, 4 spaces, tabs, and compact output. The stats bar shows input bytes, output bytes, object keys, array count, maximum nesting depth, and total element count so you can see the shape of the conversion immediately.
Common XML to JSON Use Cases
- SOAP and REST XML responses — convert a SOAP envelope or XML API response to JSON for a JavaScript or Python consumer.
- RSS and Atom feeds — parse a feed document into a JSON array of items for filtering, caching, or display logic.
- KML and GeoXML — convert geographic markup into JSON for a mapping library or geospatial data workflow.
- Android resources — map string resource XML into a JSON object for a localization tool or documentation script.
- Maven and Gradle POM files — extract dependency and configuration data into JSON for automated tooling.
- Configuration and catalog files — convert application settings, server configuration, or product catalogs that use XML into JSON for a modern API or front-end integration.
- Mixed content documents — inspect XHTML, legal documents, or narrative XML where elements and text nodes coexist and must be preserved under _text.
- Local file conversion — open a local .xml file directly in the browser without sending it to an upload service or conversion API.
Privacy and Data Handling
All XML parsing, JSON serialization, copying, and downloading happen on this device. ToolsSonic does not receive, store, or log any XML input or JSON output. The session history visible at the bottom of the tool stores only non-content metadata — file name and input byte count — never the actual XML text or JSON result. Your SOAP credentials, internal API responses, and application configuration stay on your machine.
Common use cases
- Converting a SOAP XML response to JSON for a JavaScript or Python consumer
- Parsing an RSS or Atom feed document into a JSON array of items
- Converting KML geographic markup to JSON for a mapping library
- Mapping Android string resource XML to JSON for a localization tool
- Extracting Maven POM dependency data into JSON for automated tooling
- Converting application configuration or product catalog XML to JSON
- Inspecting mixed content XML where elements and text nodes coexist
- Opening a local XML file without uploading it to a server
Why use ToolsSonic's XML to JSON Converter?
ToolsSonic's XML to JSON Converter uses the browser's native DOMParser to validate the document before conversion, reports malformed XML with the exact parser diagnostic, exposes attribute mapping, namespace, repeated-element, root, and formatting choices explicitly, shows six conversion statistics, and keeps all processing in browser memory. No XML is uploaded, sent to an API, stored in localStorage, or included in analytics.
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