JSON Schema Generator
Paste any JSON and instantly generate a valid JSON Schema (draft-07). Infers types, handles nested structures, detects required fields — all processed locally in your browser.
Open Schema GeneratorFeatures
Draft-07 Schema
Generates schemas using the most widely supported draft.
Nested Support
Handles deeply nested objects and arrays of objects.
Smart Inference
Detects types, required fields, and enum values.
Fully Private
Your JSON data is processed locally in your browser.
Frequently Asked Questions
What is JSON Schema?
JSON Schema is a vocabulary that allows you to validate and describe the structure of JSON data. It defines the expected types, required fields, value constraints, and nesting of a JSON document. It's widely used for API validation, form generation, and data documentation.
Which JSON Schema draft does this generate?
The tool generates schemas conforming to JSON Schema draft-07 (http://json-schema.org/draft-07/schema#), which is the most widely supported version across validators and tools.
How does type inference work?
The generator analyzes each value in your JSON: strings become "string", whole numbers become "integer", decimals become "number", and booleans become "boolean". Arrays get an items schema inferred from their contents, and objects generate properties with required fields.
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