JSON Generator

JSON 生成器

用 Faker 风格的辅助函数（姓名、邮箱、日期等）从模板生成逼真的模拟 JSON 数据。

Example

Template

[
  {
    "$repeat": 5,
    "$template": {
      "id": "{{uuid}}",
      "name": "{{name}}",
      "email": "{{email}}",
      "age": "{{integer(18,65)}}",
      "active": "{{boolean}}",
      "joined": "{{date}}"
    }
  }
]

225 characters

Generated JSON

[
  {
    "id": "936071df-d7ad-4912-bee8-284fd2d7008d",
    "name": "Iris Müller",
    "email": "dave.garcia@mail.net",
    "age": 65,
    "active": false,
    "joined": "2024-08-23"
  },
  {
    "id": "4045ef3d-9552-4f1e-b6b4-18139b733bed",
    "name": "Grace Tanaka",
    "email": "eve.jones@example.com",
    "age": 65,
    "active": false,
    "joined": "2024-12-23"
  },
  {
    "id": "47de3584-60a5-4749-a893-66e3ef9e0488",
    "name": "Jack Dubois",
    "email": "hank.tanaka@test.dev",
    "age": 20,
    "active": true,
    "joined": "2023-04-19"
  },
  {
    "id": "4b80dbeb-8ff9-4c08-a3b0-f75990691214",
    "name": "Carol Garcia",
    "email": "eve.dubois@mail.net",
    "age": 51,
    "active": true,
    "joined": "2024-08-08"
  },
  {
    "id": "157cad4b-65b8-4ca4-bfce-298b060d36fa",
    "name": "Grace Jones",
    "email": "eve.garcia@acme.org",
    "age": 57,
    "active": false,
    "joined": "2025-11-25"
  }
]

Available Placeholders

{{name}}Full name (e.g. Alice Smith)

{{firstName}}First name only

{{lastName}}Last name only

{{email}}Email address

{{uuid}}UUID v4

{{date}}Date (YYYY-MM-DD)

{{datetime}}ISO 8601 datetime

{{boolean}}true or false

{{integer(min,max)}}Random integer in range

{{float(min,max)}}Random float in range

{{color}}A color name

{{status}}active / inactive / pending / archived

{{sentence}}Lorem ipsum sentence

{{loremWord}}Single lorem ipsum word

{{url}}A URL

Use [{"$repeat": N, "$template": {...}}] to repeat an object N times.

使用方法 JSON 生成器

1.编写 JSON 模板创建 JSON 对象模板，在需要生成值的地方使用 {{faker.helper}} 占位符。
2.设置数量生成对象数组时，设置要生成多少条。
3.点击「生成」工具把每个占位符替换为逼真的随机值。
4.复制或下载复制生成的 JSON，用作测试夹具、种子数据或 API 模拟响应。

JSON 生成器 & JSON Developer Standards

JSON is the standard format for web APIs and modern applications. Using the JSON 生成器 helps you check syntax, catch formatting errors, and keep your data clean and readable.

Zero-Server Security

All data entered into JSON 生成器 runs directly inside your browser sandbox. Nothing is ever sent across the network or saved on remote servers.

Clean & CI/CD Ready

Well-formatted JSON prevents runtime syntax bugs, makes code reviews easier, and ensures smooth API data exchange.

JSON 生成器常见问题

有哪些可用的生成辅助函数？

可用辅助函数包括：name.fullName、internet.email、internet.url、phone.number、address.city、address.country、datatype.number、datatype.float、datatype.boolean、date.past、date.future、lorem.sentence、company.name 等。

能生成嵌套对象吗？

能。模板可任意嵌套，每一层都可包含辅助函数、静态值、嵌套对象或嵌套数组。

能生成由对象组成的数组吗？

能。把模板包在数组里并设置重复次数，数组中每一项用同一模板但生成全新的随机值。

生成的数据是确定性的吗？

不是——每次点击「生成」都会产生全新的随机值。如需可复现的数据，可用带种子的随机函数，高级选项中有提供。

Can this tool handle large, complex JSON payloads?

Yes. Because the tool operates directly inside modern V8 JavaScript execution engines, it easily processes complex multi-megabyte payloads containing thousands of nested keys with negligible latency.

Are my proprietary payloads or secrets stored or cached?

No. BeYourTools implements zero tracking, zero telemetries, and zero database persistence. Everything stays strictly inside your browser memory and disappears the moment your tab is closed.