JSON to JSON Schema
Generate a JSON Schema (draft 2020-12) from example JSON online for free. Types, required fields and nesting inferred automatically.
JSON Schema output
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"title": "Root",
"type": "object",
"properties": {
"id": {
"type": "integer"
},
"name": {
"type": "string"
},
"email": {
"type": "null"
},
"active": {
"type": "boolean"
},
"address": {
"type": "object",
"properties": {
"city": {
"type": "string"
},
"zip": {
"type": "string"
}
},
"required": [
"city",
"zip"
]
},
"roles": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"id",
"name",
"active",
"address",
"roles"
]
}About JSON to JSON Schema
Paste an example JSON document to generate a JSON Schema (draft 2020-12): types, required fields and nested objects are inferred automatically.
Useful for API contract definitions and validation setup. The schema is generated locally — your data never leaves the browser.