JSON to JSON Schema Generator
Generate JSON Schema from JSON data online. Create validation schemas with proper types, required fields, and nested structures. Free and instant.
About JSON to JSON Schema Conversion
JSON Schema is a vocabulary for annotating and validating JSON documents. It's widely used for API documentation (OpenAPI/Swagger), form generation, configuration validation, and data interchange. This tool analyzes your JSON data and generates a JSON Schema (draft-07) that describes its structure. It correctly identifies types, marks all existing fields as required, handles arrays with item schemas, and creates nested schemas for objects. The output can be used with any JSON Schema validator or integrated into OpenAPI specifications. All processing happens in your browser.
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- Paste your JSON data into the input panel
- Set the schema title
- Click Convert to generate the JSON Schema
- Copy the schema for use with validators or API docs
Common Use Cases
- Creating JSON Schema for OpenAPI/Swagger documentation
- Generating validation schemas for REST APIs
- Building configuration file validators
- Documenting data structures for team collaboration