JSON to JSON Schema
Generate a JSON Schema from an example JSON object.
Generate a JSON Schema from a sample of your data. Paste an example JSON object and get a draft-07 schema with inferred types (string, integer, number, boolean, array, object) and required fields — ready to use for validation in your API or config. Everything runs in your browser.
{
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"properties": {
"id": {
"type": "integer"
},
"name": {
"type": "string"
},
"active": {
"type": "boolean"
},
"tags": {
"type": "array",
"items": {
"type": "string"
}
},
"profile": {
"type": "object",
"properties": {
"age": {
"type": "integer"
},
"city": {
"type": "string"
}
},
"required": [
"age",
"city"
]
}
},
"required": [
"id",
"name",
"active",
"tags",
"profile"
]
}Runs entirely in your browser — nothing is uploaded.
How to use the json to json schema
- 1Paste an example JSON object or array.
- 2The JSON Schema is generated instantly.
- 3Copy the schema into your project.
Frequently asked questions
Which JSON Schema version does it output?
Draft-07, the most widely supported version across validation libraries.
Are all fields marked required?
Yes — from a single example, every present key is treated as required. Edit the generated 'required' array to make fields optional.
Is my data uploaded?
No — the schema is generated entirely in your browser; nothing is sent to a server.
Read the guide
How to Create a JSON Schema (From an Example)