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JSON Mock Data Generator

Generate realistic fake JSON data for API testing and prototyping. Define your schema with 30+ field types, use preset templates, and download the result.

Available Field Types

Person

  • First Name
  • Last Name
  • Full Name
  • Email
  • Phone
  • Username
  • Avatar URL
  • Company
  • Job Title

Location

  • Street Address
  • City
  • State
  • Zip Code
  • Country
  • Latitude
  • Longitude

ID

  • UUID
  • ObjectId (Mongo)
  • Auto Increment

Number

  • Integer
  • Float
  • Price ($)
  • Boolean

Date/Time

  • Date (YYYY-MM-DD)
  • DateTime (ISO)
  • Unix Timestamp

Network

  • IPv4 Address
  • IPv6 Address
  • URL
  • Domain

Text

  • Color Name
  • Hex Color
  • Paragraph
  • Sentence
  • Word
  • Slug

Other

  • Custom List
  • Null

About JSON Mock Data

  • Generate up to 500 rows of realistic fake data for API testing and prototyping.
  • Choose from 6 preset templates: Users, Products, Orders, Blog Posts, Todos, and Addresses.
  • Custom List fields let you define your own enum values (comma-separated).
  • Wrap output in an array or an object with a custom key name.
  • Download as .json or copy to clipboard for use in Postman, fetch calls, or test fixtures.
  • Everything runs in your browser — no data is sent over the network.