JSON Schema Generator
Paste any JSON and instantly generate a valid JSON Schema with type inference, required fields, and nested object support.
Smart Type Inference
Automatically detects string, integer, number, boolean, array, and null types from your JSON values.
Deep Nesting Support
Handles deeply nested objects and arrays of objects, producing complete schemas for complex data structures.
100% Private
All processing happens in your browser. No data is sent to any server, ever.
Frequently Asked Questions
What is JSON Schema?
JSON Schema is a vocabulary for annotating and validating JSON documents. It describes the structure, types, and constraints of your data, making it useful for API documentation, form validation, and data interchange.
How does the generator infer types?
The tool analyzes each value in your JSON: strings become 'string', whole numbers become 'integer', decimals become 'number', true/false become 'boolean', arrays and objects are detected with their nested structures preserved.
Does it handle nested objects?
Yes. The generator recursively processes all nested objects and arrays, creating a complete schema that mirrors your entire data structure including deeply nested properties.
Is my data safe?
Yes. Everything runs entirely in your browser. No data is ever sent to a server. Your JSON never leaves your device.
Which JSON Schema draft should I use?
Draft-07 is the most widely supported version across validators and tools. Draft 2020-12 is the latest standard with additional features like dynamic references. Choose based on your toolchain's support.
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