Data builder

Combine numbers, names, dates and other data, configure fields and export JSON, JSONL, CSV, TSV, XML or SQL.

Structure editor

Drag fields by the handle. You can also focus a handle and press Up or Down.

  1. firstNameRandom name generator · firstName
  2. lastNameRandom name generator · lastName
  3. birthDateDates · value

firstName, lastName, birthDate

Up to 10 records, 50 fields, 20 values per array and 20,000 generated values per request.

Sign in to remove the guest limit.

Settings are saved in this browser.

Result

Your result will appear here.

How to use the generator

Add fields, choose generators and configure them in the editor. Use dotted paths for nested objects, arrays for repeated values and a person group for consistent names. Generate the dataset and download your chosen format.

Good to know

Schemas stay in this browser and can be exported. Guests can generate up to 10 records per request. Signed-in users have no guest quota; finite execution and data-size budgets still apply.