How are arrays represented?

Each array is wrapped in its own element and its members are emitted as repeated child elements, named item by default. You can change the array item tag.

What is the root element convention?

The converter always wraps the JSON value in a root element, named root by default. Change the Root tag field when the consuming system requires another tag.

How are JSON types and invalid XML names handled?

Type attributes are enabled by default to mark strings, numbers, booleans, nulls, arrays and objects. Object keys that are not safe simple XML names are emitted as item elements with the original key in a key attribute.

Is the generated XML well-formed and is my data uploaded?

The converter escapes XML text and attribute values, rejects XML 1.0-forbidden characters and processes the input locally in a Web Worker. Nothing is uploaded or saved by this page.

JSON · DATA CONVERTER

JSON to XML Converter

Turn JSON values into well-formed XML with a consistent root element, repeated tags for array members, escaped user data and optional type annotations for JSON values.

XML 1.0-safe output · Exact number tokens · Local Web Worker

Working with JSON paths? Open JSON Unflatten →A root wrapper is always emitted; default name: root.

JSON input

Open .json

XML output

Elements: 0 Arrays: 0 Fallback keys: 0 Output: 0 B

2 MB input limit · Runs locally

Object keys that are not simple XML names (for example, 9:00 or xml:item) become <item key="original-key">. XML 1.0-forbidden characters are rejected, not silently changed.

JSON to XML mapping

The converter always wraps the supplied JSON value in a root element, called root by default. JSON object properties become child elements when their keys are safe simple XML names. Unsafe keys are represented by the configured array-item tag with the original name preserved in a key attribute.

JSON arrays are wrapped in an element named for the property and represented by repeated child elements, called item by default. Set a different array item tag if your receiving system expects one.

Type and safety conventions

Type attributes are on by default: string, number, boolean, null, object or array. Disable them only if your target XML format expects plain text.
Text and attribute data is XML-escaped. Invalid XML 1.0 control characters and unpaired surrogates stop conversion with an error.
Element names use a conservative ASCII name set; namespaces and qualified names are not generated. Invalid property names use the item key="…" form.
JSON numeric tokens are preserved as written, including large integers. Parsing and conversion run locally in a worker; input is not uploaded or stored.

JSON to XML FAQs

Well-formed XML documents require a single document element. The converter wraps the input in <root> by default; enter a different valid simple XML tag if needed.

An array has a parent element, with each item emitted as a repeated child tag (default <item>). Nested objects and arrays keep their own child structure.

Yes. Type attributes are optional, but without them XML readers may not distinguish a number from a string, or an empty object/array from an empty value. Keep them on when retaining JSON type information matters.

Ampersands, angle brackets and attribute quotes are escaped. XML 1.0-forbidden characters are rejected. The output is generated from parsed JSON rather than inserted as HTML.

No. Conversion runs locally in a Web Worker and the page does not store or transmit the input.

JSON to XML Converter

JSON to XML mapping

Type and safety conventions

JSON to XML FAQs

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