Fake Data From JSON Schema

Generate sample JSON instances that conform to a pasted JSON Schema (types, enums, formats, constraints).

Count

SeedSame seed → same data.

Output as NDJSON

JSON array

JSON Schema (draft-07 subset)

Generated instances

[
  {
    "id": "f5b32f76-6bb5-43d0-b7bc-8efc38f10ad2",
    "email": "taylor.844@example.com",
    "name": "nova amet",
    "role": "viewer",
    "age": 62,
    "active": true,
    "createdAt": "2020-07-02T18:10:13Z"
  },
  {
    "id": "7231aab9-e526-4c46-b05c-a6208e41a799",
    "email": "sam.266@example.com",
    "role": "viewer",
    "age": 60,
    "active": false,
    "createdAt": "2019-07-11T00:14:41Z"
  },
  {
    "id": "6fe17979-0e56-4b87-a458-a48b8b1b68a7",
    "email": "taylor.210@example.com",
    "name": "echo alpha delta lor",
    "role": "viewer",
    "age": 29,
    "active": false,
    "createdAt": "2023-07-04T13:01:18Z",
    "tags": [
      "dolor",
      "quartz lorem"
    ]
  },
  {
    "id": "dcb9d2af-2c49-486d-905b-abfb80826230",
    "email": "casey.922@example.com",
    "role": "admin",
    "age": 67,
    "active": false,
    "createdAt": "2015-09-19T07:49:01Z",
    "tags": [
      "river dolor",
      "ipsum",
      "amet"
    ]
  },
  {
    "id": "81fa93c9-2913-4ada-9fbd-f1eeacffc9dd",
    "email": "morgan.757@example.com",
    "role": "viewer",
    "age": 61,
    "active": false,
    "createdAt": "2025-01-04T04:14:44Z",
    "tags": [
      "amet amet"
    ]
  }
]

5 instancesarrayenums, formats, min/max, items handled

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Fake Data From JSON Schema

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