What happens to JSON arrays when converted to XML?

JSON arrays are expanded into repeated sibling XML elements with the same tag name. For example, `{"item": [1, 2, 3]}` becomes three ` ` elements. This follows the most common convention used by XML serialization libraries. Arrays of objects each become a full element block with their properties as child elements or attributes.

Can this tool handle XML with namespaces?

Yes. XML namespaces (e.g., `xmlns:ns="http://example.com"`) are preserved during XML-to-JSON conversion and represented as JSON attributes using the `@xmlns` convention. When converting back to XML, namespace declarations are restored. Full namespace-aware XPath querying is not supported, but structural round-trip fidelity is maintained.

Does JSON to XML conversion require a root element?

Yes. Well-formed XML must have exactly one root element. If your JSON is a top-level object, its first key can serve as the root, or you can specify a wrapper element name. If your JSON is a top-level array, a root wrapper is mandatory since repeated root elements make XML invalid.

OmniToolsKit

JSON ↔ XML Converter

Name: JSON ↔ XML Converter
Rating: 5 (2 reviews)
Author: OmniToolsKit

Paste JSON to get XML, or paste XML to get JSON — attributes and nesting preserved

Bidirectional ConvertAttribute MappingPretty PrintOne-click Copy

JSON Input

XML Output

About this tool

Convert JSON to XML and XML to JSON instantly in your browser with full attribute support. This bidirectional JSON↔XML converter handles namespaces, CDATA sections, and attribute conventions, making it indispensable for bridging modern REST APIs with legacy SOAP or XML-based systems.

About

Bidirectional JSON to XML Converter for API Integration

JSON and XML are the two dominant data interchange formats in software development, but they model data differently. JSON uses key-value pairs and arrays, while XML uses elements, attributes, text content, and namespaces. Converting between them requires careful handling of structural differences.

This JSON to XML converter maps JSON object keys to XML element names and handles attributes using the `@attr` convention (e.g., `{"@id": "1"}` becomes `<element id="1">`). Arrays are expanded into repeated sibling elements with the same tag name. The XML to JSON direction parses element attributes, text content, and CDATA sections back into structured JSON objects.

All conversion runs client-side in your browser — no data is transmitted to any server. This is critical for enterprise environments where production API payloads, customer data, or internal configuration must never leave the local environment.

What makes it unique

Bridging REST APIs with Legacy SOAP and XML Systems

Many enterprise systems — banking, healthcare, government — still rely on SOAP-based web services that require XML input and output. Modern microservices produce JSON. This converter closes that gap, allowing developers to transform REST API responses into XML for SOAP consumption or parse SOAP responses into JSON for use in modern applications. Understanding the attribute and text-content mapping conventions ensures round-trip accuracy when integrating across protocol boundaries.

Common Use Cases for JSON to XML Converter

Integrating REST APIs with SOAP Services

Transform JSON API responses into valid XML for consumption by legacy SOAP endpoints without writing manual serialization code.

Parsing XML API Responses into JSON

Convert XML responses from third-party services (RSS feeds, payment gateways, government APIs) into JSON for use in modern JavaScript applications.

Configuration Format Migration

Migrate application configuration stored in XML (Maven pom.xml, Spring XML beans, Android resources) into JSON-based config systems.

How to Use

1
Select Conversion Direction
Choose JSON→XML or XML→JSON. For JSON to XML conversion, you may optionally specify a root element name since JSON arrays and objects have no inherent root wrapper, which is required by well-formed XML.
2
Paste Your Input Data
Enter your JSON object or XML document in the input panel. The tool validates syntax immediately and reports errors with context so you can fix structural issues before converting.
3
Copy or Download the Output
The converted output appears instantly in the right panel with syntax highlighting. Copy it to clipboard or download as a .json or .xml file for use in your integration pipeline.

Features

Attribute Handling via @attr Convention
JSON keys prefixed with `@` are mapped to XML element attributes, and `#text` keys become text content, enabling accurate round-trip conversion.
Namespace and CDATA Support
Preserves XML namespaces during XML→JSON parsing and supports wrapping values in CDATA sections to protect special characters in JSON→XML output.
Root Element Configuration
Specify a custom root element name when converting JSON to XML, ensuring the output is valid well-formed XML suitable for any XML parser or SOAP endpoint.

Frequently Asked Questions

Found this tool useful?

Share your experience and help others discover it.