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Generate realistic test data (names, emails, addresses, dates, identifiers) as JSON or CSV, for seeding a development database or building a UI before the API exists.
Generate realistic mock data using Faker.js. Choose fields, set row count, and export as JSON, CSV, SQL, or TypeScript. All generation happens in your browser.
Output Format
The reason to use generated data rather than production data in development is not only privacy law, though GDPR and CCPA make it a legal question. It is that copying production data into a development environment means every developer laptop, every CI runner, and every backup of those now contains real customer records, and the blast radius of any one of those leaking is enormous.
Make your test data deliberately awkward. Names with apostrophes and non-Latin characters, very long strings, empty optional fields, dates at daylight-saving boundaries. Uniform, tidy fixtures produce UIs that break the first time a real user with a hyphenated surname signs up.