### Input XML Sample Live Preview _\\John\\30\\_ Convert to JSON Clear ### JSON OutputLive Start typing XML to see live preview... # XML to JSON Converter - Convert XML to JSON Online Convert XML elements, attributes and repeated tags into JSON in your browser. Review the output when working with mixed content or XML-specific features. ## What Is an XML to JSON Converter? An **XML to JSON converter** is an online tool that transforms data written in XML (eXtensible Markup Language) into JSON (JavaScript Object Notation) format - instantly, without writing any code. Whether you paste raw XML, a SOAP envelope, an RSS feed, a WSDL document, or any well-formed XML string, this free tool produces clean, properly structured JSON output in seconds. For example, `BookPen` produces an `item` array. Each item's attribute appears under `@attributes` and its text under `#text`. Inspect the result in the [JSON Viewer](https://www.toolcomb.com/json-viewer) or compare output versions with [JSON Compare](https://www.toolcomb.com/json-compare). XML and JSON are both widely-used data interchange formats, but they serve different ecosystems. XML dominated enterprise software for decades - it powers SOAP web services, configuration files, healthcare data standards like HL7, finance protocols like FpML, and e-commerce standards like UBL. JSON, on the other hand, has become the default format for modern REST APIs, JavaScript applications, NoSQL databases like MongoDB, and microservices architectures. The need to **convert XML to JSON** arises constantly in professional workflows: consuming a SOAP API response in a React or Vue application, migrating legacy enterprise data to a modern database, processing RSS/Atom feed data in JavaScript, integrating old ERP systems with modern cloud services, or simply making bulky XML readable as a compact JSON object. This tool handles all of those scenarios - entirely within your browser. ## How to Convert XML to JSON - Step by Step Converting XML data to JSON format takes just a few seconds with this tool: 1. **Paste your XML** - Copy any well-formed XML string (including SOAP envelopes, RSS feeds, config files, API responses, or custom XML data) and paste it into the input panel on the left. You can also click the _Sample_ button to load example XML instantly. 2. **Enable Live Preview (optional)** - Toggle the "Live Preview" switch to see your JSON output update automatically as you type. This is ideal when editing or debugging XML interactively. 3. **Click "Convert to JSON"** - If Live Preview is off, click the button to trigger the conversion. The tool validates your XML first and reports any syntax errors clearly. 4. **Review the JSON output** - The right panel displays pretty-printed, formatted JSON. Use the search feature to quickly locate specific keys or values inside large outputs. 5. **Copy or use fullscreen mode** - Click "Copy" to copy the JSON to your clipboard, or expand to fullscreen for easier reading of large JSON documents. The entire process happens locally in your browser. No data is sent to any server at any point, making this tool safe for sensitive XML payloads like internal API responses, configuration data, or proprietary business data. ## XML to JSON Conversion Example Here is a practical example showing how the converter handles attributes, nested elements, and repeated sibling tags - the three most common patterns you will encounter when parsing real-world XML data. ### Input XML ``` John Doe 30
123 Main St New York 10001
reading swimming coding ``` ### Output JSON ``` { "person": { "@attributes": { "id": "1" }, "name": "John Doe", "age": "30", "address": { "street": "123 Main St", "city": "New York", "zipCode": "10001" }, "hobbies": { "hobby": [ "reading", "swimming", "coding" ] } } } ``` Notice how the XML attribute `id="1"` is preserved under the `@attributes` key, and the three repeated `` elements are automatically converted into a JSON array. This matches the conventions used by most production XML parsers and is compatible with libraries like Jackson, xml2js, and fast-xml-parser. ## XML vs JSON - Key Differences Explained Understanding why you need to convert between these formats requires knowing what makes them different. Both XML and JSON represent hierarchical, structured data - but they were designed for different eras of software development. | Feature | XML | JSON | | --- | --- | --- | | Syntax | Tag-based () | Key-value pairs {"key": "value"} | | Verbosity | Verbose - closing tags required | Compact and lightweight | | Attributes | Native attribute support | No native attributes | | Data types | Everything is text | String, number, boolean, null, array, object | | Schema validation | XSD, DTD (powerful) | JSON Schema (external) | | Common use | SOAP, enterprise, HL7, config files | REST APIs, JavaScript, NoSQL, mobile | | Parse speed | Slower (larger payload) | Faster (smaller payload) | | Comments | Supported () | Not supported | In practice, most modern web projects use JSON exclusively - it parses natively in JavaScript via `JSON.parse()`, produces smaller payloads over HTTP, and maps directly to objects in Python, JavaScript, Go, and virtually every modern language. XML remains indispensable in regulated industries (healthcare, finance, legal), legacy enterprise systems, and anywhere SOAP web services are involved. ## Common Use Cases for XML to JSON Conversion The following scenarios represent the most frequent real-world reasons developers, data analysts, and system integrators need to convert XML data to JSON format: ### 1. SOAP API Response Parsing Many enterprise systems - banking platforms, ERP systems like SAP, insurance platforms, and government services - expose data exclusively via SOAP APIs that return XML. When building a modern React, Angular, or Vue frontend that consumes these services, converting the SOAP XML response to JSON is the first step. This tool lets you paste a raw SOAP envelope and instantly see the equivalent JSON object you will need to work with in JavaScript. ### 2. RSS and Atom Feed Processing RSS and Atom feeds are XML documents. If you are building a news aggregator, content dashboard, or podcast app using a JavaScript framework, converting these feeds to JSON makes them far easier to render with modern tooling. Paste the feed XML directly into this tool to get a JSON structure ready for your application. ### 3. Legacy System Data Migration Older enterprise software often exports data in XML format - product catalogs, inventory exports, customer records, financial transactions. When migrating this data to a modern NoSQL database (MongoDB, Firestore, DynamoDB) or loading it into a REST API, you need the data in JSON. This converter handles nested XML hierarchies and repeated elements automatically, making data migration faster and less error-prone. ### 4. XML Configuration File Conversion Java and .NET applications frequently use XML for configuration (Spring application context, Maven pom.xml, web.xml). When documenting these configurations or porting settings to a JSON-based system, converting the XML to JSON gives a clear picture of the configuration structure. This is especially useful when moving from a Java Spring Boot application with XML config to a Node.js service with JSON config. ### 5. API Development and Debugging When building or debugging APIs that bridge XML-based and JSON-based systems, being able to quickly visualize what the converted structure looks like saves significant development time. Paste a sample XML payload, see the exact JSON output, and verify your mapping logic is correct before writing any transformation code. ### 6. Data Analysis and ETL Pipelines Data engineers building ETL (Extract, Transform, Load) pipelines often receive data in XML from upstream sources - government open data portals, third-party data vendors, or legacy databases. Converting XML to JSON is a common first step before loading data into analytics tools, data warehouses, or processing pipelines built in Python, Spark, or dbt. ### 7. Healthcare and Finance Data Standards Healthcare data often travels as HL7 XML messages. Financial data uses formats like FpML and FIXML. These industry standards are XML-based, but modern healthcare apps and fintech platforms increasingly expect JSON. Converting these structured XML messages to JSON helps developers understand the data model and prototype integrations quickly. ## How XML to JSON Conversion Works - Parsing Rules XML and JSON do not map one-to-one. This converter groups attributes and repeated elements, and treats CDATA as text. Comments and processing instructions are omitted; text is trimmed, and the order of text interleaved with child elements is not preserved. Review the output before using it as a substitute for the original XML. - **XML elements → JSON object keys.** Each XML element becomes a key in the resulting JSON object, with the element's content as its value. - **XML attributes → `@attributes` object.** All attributes of an XML element are grouped under a special `@attributes` key, preserving their names and values without collision with child elements. - **Repeated sibling elements → JSON arrays.** When two or more XML elements share the same tag name at the same level (e.g., multiple `` or `` tags), they are automatically collected into a JSON array. This is critical for correctly representing lists in SOAP responses and RSS feeds. - **Text nodes → string values.** Pure text content of an element becomes a string value. When an element has both text content and child elements or attributes, the text is stored under a `#text` key. - **Nested elements → nested JSON objects.** The full hierarchy of the XML tree is preserved in the JSON output, with child elements becoming nested objects. - **XML declaration is ignored.** The `` processing instruction is correctly ignored - it is metadata, not data. - **Invalid XML → clear error message.** If your XML is malformed (missing closing tags, invalid characters, bad encoding), the tool reports the error immediately rather than producing silently incorrect JSON. ## Privacy & Security - Your Data Never Leaves Your Browser Conversion runs in your browser and the tool does not upload XML for processing. Browser extensions, shared devices and copied output can still expose the data you enter. - Internal API responses from production systems - SOAP payloads containing customer or patient data - Financial transaction XML exports - Configuration files with environment variables or secrets - Proprietary data formats from internal business systems Your work is also automatically saved to your browser's local storage for up to 30 days, so you can pick up where you left off without having to re-paste your XML. You can clear this at any time using the "Clear" button. ## Frequently Asked Questions ### How are XML attributes handled in the JSON output? XML attributes are converted to a special `@attributes` object nested inside the element's JSON representation. For example, `` becomes `{ "person": { "@attributes": { "id": "1", "active": "true" } } }`. This convention is widely used by XML parsing libraries and keeps attribute data clearly separated from child element data. ### What happens when XML has repeated elements with the same tag name? Repeated sibling elements with the same tag name are automatically converted to a JSON array. So three `` elements become `"item": ["value1", "value2", "value3"]`. This is essential for correctly representing lists in XML - a pattern very common in SOAP responses, product catalogs, and RSS feed items. ### Can I convert SOAP XML responses to JSON? You can paste a well-formed SOAP envelope. Namespace prefixes remain in key names, but comments and the original order of mixed text and elements are not preserved. Review the result against your integration's requirements. ### Is this XML to JSON converter free? Yes, this tool is completely free with no registration required. There are no rate limits, no file size fees, and no premium tiers. You can use it as many times as needed, for any amount of XML data. ### Can I convert large XML files? Processing time and the amount of XML you can convert depend on your browser and device memory. Large or deeply nested documents may be slow or fail; try a smaller representative sample first. ### What does the Live Preview mode do? Live Preview mode converts your XML to JSON automatically as you type, with a 300ms debounce delay to avoid unnecessary re-processing on every keystroke. It's particularly useful when incrementally writing or editing XML and wanting to see the JSON output update in real time. You can toggle it off if you prefer to control when conversion happens explicitly. ### How are XML namespaces handled? Namespace prefixes are kept in element and attribute names, and namespace declarations appear under @attributes. This mapping does not preserve every XML feature or guarantee a lossless round trip. ### What is the difference between XML and JSON data formats? XML uses opening and closing tags to define hierarchical data and supports attributes, namespaces, CDATA sections, and schema validation via XSD. JSON uses a simpler key-value syntax with native support for numbers, booleans, arrays, and null values. JSON is more compact, parses faster in most languages, and has become the dominant format for REST APIs, web applications, and NoSQL databases. XML remains essential for SOAP services, enterprise integrations, document-centric data, and regulated industry standards. ### Can I convert JSON back to XML? This tool is specifically designed for XML to JSON conversion. For the reverse direction - converting JSON to XML - look for a dedicated JSON to XML converter tool, which applies its own set of transformation rules to reconstruct XML elements from JSON keys and values. ### What XML formats and document types are supported? Any well-formed XML is supported, including XML with declarations (``), XML with namespaces (SOAP, WSDL, XSD), RSS and Atom feeds, Android layout XML, Maven and Spring configuration files, SVG (as XML), and custom XML schemas used by business applications. The only requirement is that the XML must be well-formed - all tags must be properly opened and closed, and the document must have a single root element. ## Related Data Conversion Tools If you work frequently with data format conversions, you may also find these related tools useful: - **JSON to XML Converter** - Reverse the process: transform JSON objects back into well-formed XML documents. - **JSON Formatter & Beautifier** - Pretty-print minified JSON or compact already-formatted JSON into a single line. - **JSON Validator** - Check whether a JSON string is syntactically valid and get detailed error messages for malformed JSON. - **XML Formatter** - Indent and beautify raw or minified XML for easier reading and debugging. - **XML Validator** - Verify that an XML document is well-formed and optionally validate it against an XSD schema. - **CSV to JSON Converter** - Transform spreadsheet or database CSV exports into JSON arrays for use in web applications. - **YAML to JSON Converter** - Convert YAML configuration files (common in Docker, Kubernetes, and CI/CD pipelines) to JSON format. - **Base64 Encoder/Decoder** - Encode or decode Base64 strings, often embedded inside XML documents as CDATA or attribute values. ## Related Tools Discover more free tools that might help with your next task. 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How ToolComb’s XML validator differs from XML-to-JSON and from schema.](https://www.toolcomb.com/blog/well-formed-xml-is-not-xsd) - [Why XML to JSON Looks Wrong (Attributes, Text, and Arrays of One) XML is a document tree. JSON is typed values. Why converters invent `#text` keys, wrap singles in arrays, and drop namespaces - and how to inspect the result locally.](https://www.toolcomb.com/blog/why-xml-to-json-looks-wrong) - [How to Convert XML to JSON for Modern Apps Legacy XML to JSON without an upload.](https://www.toolcomb.com/blog/how-to-convert-xml-to-json) [View All Tools](https://www.toolcomb.com/tools)