JSON Schema Generator
DeveloperGenerate draft 2020-12 JSON Schema documents from sample JSON.
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"title": "TinyToolboxSchema",
"type": "object",
"properties": {
"id": {
"type": "integer"
},
"email": {
"type": "string"
},
"active": {
"type": "boolean"
},
"roles": {
"type": "array",
"items": {
"type": "string"
}
},
"profile": {
"type": "object",
"properties": {
"displayName": {
"type": "string"
},
"age": {
"type": "integer"
}
},
"required": [
"displayName",
"age"
],
"additionalProperties": false
}
},
"required": [
"id",
"email",
"active",
"roles",
"profile"
],
"additionalProperties": false
}Reach developers using the JSON Schema Generator tool
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How to Use JSON Schema Generator
Paste a representative JSON document and the tool generates a draft 2020-12 JSON Schema in real time. Arrays infer item schemas, nested objects become nested property maps, integer vs number is preserved, and required keys are inferred from the sample document you provide.
Paste sample JSON
Use a real payload or config file sample that reflects the structure you want to validate.
Review the schema
Check the generated object, array item definitions, and required fields to confirm they match your expectations.
Copy into your stack
Copy the schema and drop it into Ajv, OpenAPI tooling, validation docs, or internal contracts.