Data Format Converter (JSON ⇆ XML)
Convert data structures bidirectionally between JSON and XML format 100% in your browser.
Bidirectional JSON ⇆ XML Data Format Converter
Seamlessly transform API responses and configuration payloads between JSON objects and XML markup elements.
1. JSON to XML Mapping
Converts JSON keys, arrays, and nested structures into clean XML tags with entity escaping.
2. XML DOM Parsing
Uses native DOMParser to extract XML node trees, attributes, and text nodes into formatted JSON.
3. Zero Network Footprint
All transformations happen directly in browser memory without sending data to external APIs.
About the Format Converter
The Format Converter translates structured data between the serialisation formats you meet across config files, APIs and data exports. Convert a JSON API response into YAML for a Kubernetes manifest, turn a legacy XML payload into JSON for a modern client, or flatten a CSV export into JSON records. Nesting, arrays and data types are preserved as faithfully as each target format allows.
How to use the Format Converter
- Select the source format and the target format.
- Paste your document into the input panel.
- Copy the converted output, or download it for use in your project.
Frequently asked questions
Does JSON to XML conversion keep arrays intact?
XML has no native array type, so each array element is emitted as a repeated child element under the parent key. Converting back to JSON restores the array when more than one sibling of the same name is present.
Why did my YAML comments disappear?
Comments are not part of the data model. Converting YAML to JSON and back preserves keys and values but drops comments, anchors and formatting, because JSON has no way to represent them.
Can I convert sensitive configuration files?
Yes. Parsing and serialisation run entirely in your browser, so secrets in a config file are never uploaded to a server or written to logs.
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Format Converter is free to use with no account, no ads and no usage limits. Every calculation runs locally in your browser, so nothing you paste is ever uploaded. See our privacy policy.