Free Online Tool
XML to JSON Schema
Paste your XML and instantly generate a JSON Schema definition. Infers types, arrays, and nested structures automatically.
Instant
No uploads
Type inference
What Is XML to JSON Schema Conversion?
XML to JSON Schema conversion analyzes the structure of an XML document — its elements, attributes, nesting, and data types — and produces a formal JSON Schema definition that describes an equivalent JSON structure. This is essential when migrating from XML-based systems to JSON APIs, or when you need to validate JSON data that was originally modeled in XML.
Our converter uses the browser's native DOMParser to parse your XML, then recursively walks the document tree to infer types, detect arrays (repeated sibling elements), and map XML attributes to schema properties. The output follows JSON Schema Draft-07, the most widely supported version.
If you're working with XML data and need to convert it to JSON for modern APIs, or generate a JSON Schema for validation, this tool bridges both worlds. Paste XML markup and get structured JSON output, or generate a schema that describes the data structure. Useful for API migrations, data transformation pipelines, and schema documentation.
Key Features
Instant Conversion
Paste XML and get a valid JSON Schema definition immediately. No waiting, no server processing — conversion happens in your browser in milliseconds.
100% Client-Side
Your XML data never leaves your device. All parsing and schema generation runs locally in your browser using the native DOMParser API.
Smart Type Inference
Automatically detects strings, numbers, booleans, arrays, and nested objects from your XML structure. Attributes are prefixed with @ in the schema.
Draft-07 Compliant
Generates schemas following JSON Schema Draft-07 specification with proper $schema declaration, type definitions, and required field detection.
Handles Complex XML
Supports deeply nested elements, repeated child nodes (auto-detected as arrays), attributes, mixed content, and multiple root-level structures.
Copy-Paste Ready
One-click copy to clipboard. The generated schema is properly formatted with indentation, ready to paste into your API documentation or validation pipeline.
Who Is This Tool For?
API Developers
Converting legacy XML APIs to JSON? Generate the target schema from your existing XML payloads to define validation rules for the new JSON endpoints.
Data Engineers
Migrating XML data feeds to JSON-based pipelines. Use the generated schema to validate transformed data and catch structural issues early.
QA Engineers
Create validation schemas from sample XML responses to automate API contract testing. Ensure XML-to-JSON transformations preserve the expected structure.
Technical Writers
Document XML data models by converting them to JSON Schema, which is widely supported by API documentation tools like Swagger and Stoplight.
XML to JSON Schema Mapping Reference
| XML Construct | JSON Schema Output | Example |
|---|---|---|
| <name>John</name> | { type: 'string' } | Text content → string |
| <age>30</age> | { type: 'number' } | Numeric content → number |
| <active>true</active> | { type: 'boolean' } | true/false → boolean |
| id="1" (attribute) | { @id: { type: 'string' } } | Attributes prefixed with @ |
| Repeated <item> | { type: 'array', items: {...} } | Siblings → array |
| Nested <address> | { type: 'object', properties: {...} } | Child elements → object |
Frequently Asked Questions
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