1. What does this tool do
This free online JSON XML converter turns JSON into XML and XML into JSON. Use it for JSON to XML or XML to JSON when integrating systems or switching between formats. Paste one format and get the other instantly—no sign-up, no upload. All processing runs in your browser so your data stays private. Ideal for API integration, config transformation, feeds (RSS/Atom to JSON), or quick translation between formats.
2. How to use it
Quick start: Choose direction (JSON to XML or XML to JSON), paste valid JSON or well-formed XML, then view and copy the converted result. Adjust options (root name, attribute style) if the tool offers them.
- Choose direction — Select "JSON to XML" or "XML to JSON".
- Paste input — Enter valid JSON or well-formed XML in the input area.
- Convert — Click Convert (or the output updates live). The result appears in the output area.
- Copy — Copy the converted result for your API, config, or pipeline.
- Adjust options (if any) — Some tools let you set root name, attribute style, or array handling; use them to match your target format.
3. How it works
JSON → XML: The tool walks the JSON tree and emits XML elements (and optionally attributes). Arrays become repeated elements; keys become tag names (sanitized if needed). XML → JSON: The parser reads the XML tree and builds a JSON object (elements and attributes mapped by the tool’s rules). All processing is client-side in your browser. No data is sent to any server.
4. Use cases & examples
- API integration — Convert a partner’s XML response to JSON for your app (or the reverse).
- Config — Transform a JSON config into an XML format required by legacy software.
- Feeds — Turn RSS/Atom (XML) into JSON for easier handling in code.
- Quick translation — See how a structure looks in the other format without writing a script.
Example
- JSON
{"name":"Alice","age":30}→ XML e.g.<root><name>Alice</name><age>30</age></root>(exact shape depends on the tool). - XML with nested elements → JSON object with nested properties and possibly arrays.
5. Limitations & known constraints
- Mapping choices — No single standard for JSON ↔ XML; namespaces, attributes, and arrays can be represented in different ways. The tool’s output may not match another converter’s exactly.
- Round-trip — Converting A → B → A may not reproduce the original exactly (e.g. attribute vs element, order).
- Size — Very large documents may slow the browser or hit memory limits.