How to use JSON to XML
- 1
Open the JSON to XML converter
Go to tools.slaytic.com and open the JSON to XML tool. No sign-up or account required.
- 2
Paste or drop your JSON
Add valid JSON. It is parsed locally, so API keys and internal data stay on your device.
- 3
Download or copy the XML
Take the converted result, with objects mapped to nested elements and arrays to repeated tags.
How this works in your browser
The JSON is parsed into an in-memory structure and then walked recursively, with each object key becoming an element name and each nested object becoming nested elements. Arrays are handled by repeating the same element name once per item, which is XML’s conventional way of expressing a list since it has no distinct array construct. Characters with structural meaning are escaped so the document stays well-formed. The fundamental asymmetry to understand is that JSON is a typed data format while XML is a markup language: JSON knows the difference between a number, a string, a boolean and null, and XML simply holds text. Values cross over intact, but their types do not, which is why XML systems rely on schemas to say what each field should be read as.
JSON to XML vs. traditional online converters
| Feature | JSON to XML (in-browser) | Traditional online converters |
|---|---|---|
| File upload required | No - never leaves your device | Yes - file is sent to a server |
| Processing queue | None - starts instantly | Often, especially at peak times |
| Watermark on output | Never | Common on free plans |
| Usage limits | None - free, unlimited use | Often capped per day or file size |
| Works offline once loaded | Yes, for most tools | No - requires a live connection |
| Account required | No | Often, for anything beyond a trial |
Who uses JSON to XML
Integrating with legacy APIs
Convert modern JSON payloads for enterprise systems that only accept XML.
SOAP and enterprise services
Prepare data for services built around XML messaging rather than REST.
Configuration file generation
Produce XML configuration from data more conveniently authored as JSON.
Migrating between formats
Move stored data into XML for a system or archive that requires it.
Frequently asked questions
How are JSON arrays represented in XML?
Each item in a JSON array becomes a repeated XML element with the same tag name.
What happens with deeply nested JSON?
Nested objects become nested XML elements, mirroring the JSON structure directly.
Does the JSON need to be a specific shape?
Any valid JSON object or array can be converted, though very irregular structures may produce XML that needs manual review.
Why does the conversion lose type information?
Because XML has no native types. JSON distinguishes the number 42 from the string "42", and true from "true", but in XML everything is text between tags. The values survive exactly; what disappears is the declaration of what kind of value each one is. Anything consuming the XML has to know that from a schema or by convention.
What happens to null values?
JSON’s explicit null has no XML counterpart, so it typically becomes an empty element. That is worth noting because an empty element and a genuinely empty string look identical afterwards, and the distinction is not recoverable.
Why are some of my keys causing problems?
JSON keys are free-form strings while XML tag names are not: no spaces, no leading digits, a restricted character set. A key such as "first name" or "2024" has no valid direct translation, so renaming those keys before converting gives predictable results.
Is my data uploaded anywhere?
No. The JSON is parsed and the XML generated inside your browser tab.