Automatically generate JSON Schema (Draft 7) from your JSON data with type and format inference.
JSON Schema is a vocabulary that allows you to annotate and validate JSON documents. It describes the structure, type constraints, and validation rules for your data.
JSON Schema is widely used for API validation, form validation, configuration files, and data interchange. It's supported by validation libraries in JavaScript, Python, Java, Go, and many other languages.
API Validation
Generate schemas for API request/response validation
Documentation
Auto-generate documentation from sample data
Type Generation
Create TypeScript types from JSON Schema definitions
Data Migration
Validate data structure during migrations
How does the JSON Schema generator work?
Paste your JSON data and click 'Generate Schema'. The tool analyzes your JSON structure and infers the schema including types, formats, and required fields.
What JSON Schema version does this generate?
This tool generates JSON Schema Draft 7 compliant schemas, which are widely supported by validation libraries across different programming languages.
How does format detection work?
The tool automatically detects common formats by analyzing string patterns. It can identify email addresses, URIs, dates, and date-time strings based on their structure.
What is strict mode?
Strict mode adds additional constraints to the schema, including 'additionalProperties: false' for objects to prevent extra fields, and 'minItems' for non-empty arrays.
Can I include example values in the schema?
Yes! Enable the 'Include examples' option to add the original values as 'examples' in the schema, which is useful for documentation.
Privacy First
All schema generation happens in your browser. Your JSON data never leaves your device.
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