JSON Schema Generator
Infer a JSON Schema from a sample document.
Why use this schema generator
Infers types and required fields
Every key present in the sample is marked required by default.
Nested schemas included
Nested objects and arrays get their own nested schema definitions.
Pairs with Schema Validator
Generate a starting schema here, then validate future documents against it.
About the JSON Schema Generator
Paste a sample JSON document and get a draft JSON Schema inferred from its structure — types, required fields, and nested object/array shapes included.
Frequently asked questions
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