XML to JSON converter online: fast, free, browser-based

An XML to JSON converter parses XML documents and outputs clean, valid JSON in your browser, handling attributes, nested elements, arrays, and namespaces without any server upload. Try the free ToolHQ XML to JSON converter to convert any XML document instantly.

An XML to JSON converter is a developer tool that reads an XML document's element hierarchy, attributes, and text content and produces a semantically equivalent JSON structure that modern APIs and JavaScript applications can consume directly.

XML was the dominant data exchange format of the early web and is still used extensively in legacy systems, SOAP APIs, configuration files, RSS feeds, and enterprise software integrations. JSON is what most modern APIs produce and expect. Any developer working at the boundary of these two worlds needs a reliable way to convert between them, and doing it by hand is tedious and error-prone.

Key takeaways

• Converts XML elements, attributes, nested structures, and text nodes to JSON
• Handles namespaces and attribute-heavy XML documents common in enterprise and legacy formats
• Browser-based: your XML data never leaves your device
• Output is valid, properly formatted JSON ready for use in APIs or code
• Free, instant, no account needed

---

What XML and JSON are, and why conversion is needed

XML (Extensible Markup Language) is a text-based format that uses nested angle-bracket tags to represent structured data. It supports attributes, namespaces, comments, and schema validation. XML was the standard data exchange format for web services (SOAP APIs) and configuration files through the 2000s and is still widely used in enterprise systems, Microsoft Office formats, SVG graphics, and RSS/Atom feeds.

JSON (JavaScript Object Notation) emerged as the preferred format for web APIs in the 2010s, largely because it is more compact, faster to parse, and directly compatible with JavaScript objects. Most modern REST APIs produce and consume JSON.

The conversion between them is not always straightforward because XML has concepts that JSON does not:

• Attributes: XML elements can have attributes (<user id="42">) that must be mapped to JSON keys (usually with an @ prefix like "@id": "42")
• Mixed content: XML elements can have both child elements and text content simultaneously
• Namespaces: XML namespaces (xmlns: prefixes) identify which vocabulary an element belongs to

The ToolHQ converter handles all of these cases, producing JSON that faithfully represents the XML structure. Arrays are automatically inferred when XML contains repeated sibling elements with the same name.

---

When XML-to-JSON conversion is useful

Consuming SOAP API responses in a modern application. Legacy enterprise APIs still return XML responses. Converting the response to JSON lets you work with it using standard JSON tooling in JavaScript, Python, or any modern language.

Reading RSS and Atom feeds. News sites, blogs, podcasts, and many aggregators still distribute content via RSS (XML). Converting a feed to JSON makes it easier to process and display in a web application.

Working with Microsoft Office formats. Word (.docx), Excel (.xlsx), and PowerPoint (.pptx) files are internally XML documents inside ZIP archives. Extracting and converting specific XML parts to JSON is a common step in document processing pipelines.

Integrating with legacy enterprise systems. ERP, CRM, and enterprise middleware platforms frequently exchange data in XML. Modern applications that need to integrate with these systems often convert incoming XML to JSON as the first processing step.

Converting SVG data. Scalable Vector Graphics files are XML. Converting them to JSON is sometimes needed for data visualization frameworks that work with JSON-formatted graphics data.

Mini-story: Patrick, a 36-year-old backend developer in Dublin, was integrating a new application with a legacy insurance claim processing system that returned all responses as SOAP XML. His application was built around JSON. Rather than write a custom XML parser for each response type, he used the ToolHQ XML to JSON converter to manually test the output structure for each response type during development. He could see exactly how the XML attributes and nested elements mapped to JSON keys, which helped him write the correct parsing code for each response. The converter cut his development time for the integration in half.

Convert your XML to JSON now

---

How to use the XML to JSON converter: step by step

1. Paste your XML. Copy your XML document, an API response, a config file, an RSS feed, or any other XML source, and paste it into the input field. The converter accepts any well-formed XML.

2. Trigger the conversion. The converter typically processes the XML automatically when you paste. If there is a convert button, click it.

3. Review the JSON output. The converter shows the JSON equivalent with proper formatting and indentation. Check how attributes and namespaces have been handled, particularly for XML with many attributes or complex namespace usage.

4. Validate the JSON structure. The output should be valid, parseable JSON. Use the ToolHQ JSON formatter to validate and pretty-print the output if needed.

5. Copy and use the JSON. Click the copy button and paste the JSON into your application, API client, or code editor.

---

Tips for XML-to-JSON conversion

Understand how attributes become JSON keys. XML attributes are typically converted to JSON keys with a convention like @attribute-name or _attributes. The specific convention depends on the converter's implementation. Review the output to understand how your converter handles attributes, then write your consuming code accordingly.

Repeated elements become arrays. If an XML document has multiple sibling elements with the same tag name, the converter infers that they form an array. A single element of the same name is typically a plain object. This inference can produce inconsistent types (array vs. object) if the XML sometimes has one element and sometimes has many. Handle this in your code.

Validate the input XML first. A malformed XML document (missing closing tag, mismatched brackets) causes parse errors. If the converter returns an error, check the XML for syntax issues before troubleshooting the converter itself.

Strip unnecessary namespaces before converting. Complex XML documents often have namespace declarations that add noise to the JSON output. If you are working with a specific subset of the document, extracting just the relevant elements before converting produces cleaner JSON.

Mini-story: Helena, a 29-year-old data engineer in Stockholm, was processing product catalog XML feeds from three different suppliers for an e-commerce aggregation platform. Each feed had a different XML structure. She used the ToolHQ XML to JSON converter to manually inspect representative samples from each feed and understand how the attributes and nested elements mapped to JSON. That mapping exercise took 20 minutes and gave her the exact structure she needed to write reliable parsing code. Without the visual converter, she would have spent hours debugging incorrect assumptions about the XML structure.

The JSON to YAML converter is the next step if your application needs YAML configuration from the converted JSON. The JSON formatter validates and prettifies JSON output before you use it in code.

---

Frequently asked questions

What is XML?

XML (Extensible Markup Language) is a text format for structured data that uses nested angle-bracket tags. It is commonly used in SOAP APIs, RSS feeds, Office document formats, SVG files, and enterprise integration systems.

How are XML attributes handled in the JSON output?

XML attributes are typically converted to JSON keys with a conventional prefix, often @ or _attr. For example, <user id="42"> may become {"@id": "42", ...} or {"id": "42", ...} depending on the converter's convention.

Does the converter handle XML namespaces?

Yes. XML namespaces are preserved in the output, typically as part of the key name (e.g., "ns:element"). For most practical purposes, namespace prefixes can be stripped or ignored when the JSON is consumed by your application.

What if my XML has repeated elements?

Repeated elements with the same tag name are converted to a JSON array. If only one element of that name is present, it is typically converted to an object. Code consuming the output should handle both cases.

How are CDATA sections handled in the conversion?

CDATA sections (<![CDATA[...]]>) are XML blocks where the content is treated as raw character data and not parsed as XML markup. They are commonly used in RSS feeds to wrap HTML content in description fields, and in configuration files to embed code or special characters without escaping. When converting XML to JSON, most converters treat CDATA content as a plain text string value, stripping the CDATA wrapper and returning the raw text inside it. If your XML contains <description><![CDATA[<p>Article text</p>]]></description>, the JSON output will typically be {"description": "<p>Article text</p>"}. The HTML inside is preserved as a string. If you then need to display that HTML, you would render it as HTML in your application rather than as plain text.

Is my XML data stored or uploaded?

No. All conversion happens in your browser. Your XML is never sent to any server, and no data is stored.

---

The short version

An XML to JSON converter bridges the gap between legacy XML-based systems and modern JSON-centric applications. ToolHQ's free converter handles the full range of XML structures, including attributes, nested elements, and arrays, and runs entirely in your browser with no data upload.

Paste your XML, review the JSON, and copy it to your application.

Convert XML to JSON now

Need to go further? The JSON to YAML converter converts your JSON output to YAML. The JSON formatter validates and prettifies JSON. Browse all developer tools on ToolHQ.

---