Generate realistic test data from JSON Schema, TypeScript types, or sample JSON. Smart field detection, configurable output, and export options — all in your browser.
JSON Schema, TypeScript types, or sample JSON. Paste what you have and we'll infer the structure.
Recognizes names, emails, phones, dates, URLs, UUIDs, addresses, and more from field names.
Record count, locales, edge cases (nulls, empty strings, boundary values), and seed for reproducibility.
JSON, CSV with headers, or SQL INSERT statements with proper escaping and NULL handling.
Paste JSON Schema, TypeScript interface, or sample JSON. We infer types and generate realistic data.
Set record count, locale, edge cases, and optional seed for reproducible generation.
Preview in table, copy or download as JSON, CSV, or SQL INSERT statements.