JSON Schema Generator
Generate a JSON Schema by inferring types and required properties from example JSON data.
Generated JSON Schema
{
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"properties": {
"name": {
"type": "string"
},
"age": {
"type": "integer"
},
"active": {
"type": "boolean"
},
"tags": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"name",
"age",
"active",
"tags"
]
}What is JSON Schema Generator?
JSON Schema Generator inspects sample JSON payloads and automatically constructs a formal Draft-07 JSON Schema specification. It recursively analyzes objects, arrays, primitive types (strings, numbers, booleans, null), and marks existing keys as required. Ideal for bootstrapping API schemas, OpenAPI models, and payload validation suites without manual typing.
How to use JSON Schema Generator
- 1Paste sample JSON data representing your desired payload structure.
- 2The tool automatically analyzes types and constructs a Draft-07 schema.
- 3Click Copy to copy the generated schema into your validation library or API documentation.
Key features
Automatic Type Inference
Detects strings, numbers, integers, booleans, arrays, objects, and null values.
Draft-07 Standard Output
Generates schema objects structured according to official Draft-07 specifications.
Recursive Object Inspection
Traverses nested structures and array items to produce complete schema hierarchies.
100% Private In-Browser Generation
Processes sample payloads locally in your browser with zero data uploads.
Examples & use cases
User Record Schema
Inferring schema from a basic user profile
{
"id": 1,
"name": "Priya",
"active": true
}{
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"properties": {
"id": {
"type": "integer"
},
"name": {
"type": "string"
},
"active": {
"type": "boolean"
}
},
"required": [
"id",
"name",
"active"
]
}Frequently asked questions
Helpful guides & tutorials
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