LOCAL DATA CONVERTER / JSON TO XML

JSON to XML

Build one escaped XML document from a bounded JSON object or array using explicit root and array-item element names.

Processed in this browserOne UTF-8 .json file up to 5 MB, 100 nesting levels, 1,000,000 bounded nodes, XML-safe keys, no nested anonymous arrays, and 20 MB output.

Step 1 / source

Choose the source

JSON - XML-safe data tree

Drop one file here

Choose the json object or array you want to turn into escaped xml document.

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No file upload

This operation runs with browser APIs. Nirmion receives catalogue requests, not the selected source bytes.

Original stays unchanged

The converter creates a separately named output. It never writes back into the source file.

Bounded work

One UTF-8 .json file up to 5 MB, 100 nesting levels, 1,000,000 bounded nodes, XML-safe keys, no nested anonymous arrays, and 20 MB output.

Plain-language method

How JSON to XML works

Nirmion validates a JSON container, checks every element and attribute name, wraps the data in the chosen root, maps @_ keys to attributes and #text to element text, repeats named array properties, escapes values, and validates the generated XML.

01
Choose a valid source
Use XML-safe object keys. Attribute keys may begin with @_ and must contain scalar values; #text must also be scalar.
02
Review the conversion choices
Root and item names must begin with a letter or underscore. The item name is used only when the JSON root is an array.
03
Inspect the separate result
The result ends in _nirmion_tools.xml with a UTF-8 declaration. JSON null, arrays, and object boundaries should be reviewed in the destination schema.

Useful when

Practical jobs this tool handles

Create XML fixtures from approved JSON data.
Prepare a bounded feed for an XML importer.
Move simple API records into an element-based interchange format.

Before converting

Check the source and destination rules

Validate keys against the receiving XML schema.
Choose meaningful root and item names.
Review nulls, repeated elements, and attributes.

Know the boundary

Know what the destination format cannot keep

The converter cannot invent an XML schema or namespace contract. Nested anonymous arrays and keys that are not valid XML names are rejected rather than renamed silently.

Quick answers

Questions before you convert

The conversion contract is deliberately explicit.

How do I create an attribute?

Use a scalar JSON key beginning with @_, such as @_id.

What does #text mean?

It supplies text for an element that may also have attributes.

Are invalid element names cleaned automatically?

No. Rejection prevents an unexpected destination schema.