Test Data & Fixture Generator
Deterministic local generationGenerate deterministic, locale-aware and relational fixtures from visual fields or JSON Schema.
Tables and row volume
Define earlier tables before relation fields that reference them.
How to use it
- 01
Model the fixture
Start from users and orders, define tables and generators, or import top-level fields from JSON Schema.
- 02
Generate and review
Use a repeatable seed, locale, uniqueness, null and relation rules, then search the bounded row preview.
- 03
Export for the test stack
Download data as JSON, CSV, NDJSON, safe SQL inserts, TypeScript constants or a reusable project.
Frequently asked questions
Is generated data uploaded?
No. Project definitions, schemas, generation and exports stay in this browser.
Will the same seed produce the same rows?
Yes, when the project, field order and locale are unchanged. Editing the model can intentionally change the random sequence.
Can this anonymize production records?
No. It creates fictional test fixtures and does not transform or prove the anonymity of real personal data.
How are table relationships generated?
A relation selects values from a field in an earlier generated table, preserving valid references within the exported fixture.
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