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Bulk fake test-data builder

Build thousands of fake rows for tests and fixtures — pick the columns, lock a seed, export JSON, JSONL, or CSV, all in a worker.
no Web Workers in this environment — bulk builds need them; the page stays honest insteadUsersCustomersAddressesContentFull namefirst + last from the locale's poolsFirst namegiven nameLast namesurnameUsernamehandle-style usernameEmailreserved example domain — cannot reach a real inboxPhonelocale pattern, registry-uncheckedStreet addressinvented street lineCityinvented city wordState / regionlocale's region namesPostcodelocale pattern, postal-registry-uncheckedCountrycountry name from the locale's listCompanyinvented company nameJob titletitle words from the localeWordlorem word in the base languageUUIDrandom v4 UUIDBooleantrue / falseLocaleRowsFormatLock seedNew seedBuildClear

- Non-payment test data only — the column registry has no card, IBAN, or payment field, and this wave ships no payment generator at all.
- Emails use reserved example domains; postcodes and phones are pattern draws checked against no registry.
- Output never persists and never leaves the tab — the build runs in a local worker and renders as text.
Nothing in yet

Paste, drop, or type to begin. Everything stays on this device.

pick columns, then Build

Next door in Data

- Fake people (/data/person)
- CSV → SQL (/config/csv-to-sql)
All data tools (/data)

Canonical HTML: https://nutter.tools/data/test-data
Markdown version: https://nutter.tools/data/test-data/index.md
Plain-text version: https://nutter.tools/data/test-data/index.txt
Agent index: https://nutter.tools/llms.txt