API Mock Data Generator
Generate realistic mock JSON from field specs — names, emails, dates, nested objects. Fill frontends before backends exist — local generation, free, no signup.
How to Use the API Mock Data Generator
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Generate realistic fake data — names, emails, numbers, addresses — in common formats for testing and demos for demos, seeding, and UI tests.
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Frequently Asked Questions
How realistic is the data?
Names, emails, addresses, dates, and IDs follow real formats — good enough for UI development and demos. Never use mock data as test assertions for business logic.
Nested objects supported?
Yes — define users with addresses containing geo coordinates and the generator nests correctly. Arrays of N items generate in one click.
How much can I generate?
Hundreds of records per run locally with no caps. Thousands stream fine; millions belong in a script, not a browser tab.
Is my schema uploaded?
No — generation runs locally in your browser. Schemas never leave your device.
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Generate realistic fake data — names, emails, numbers, addresses — in common formats for testing and demos for demos, seeding, and UI tests.
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Generate mock endpoints from OpenAPI specs — example responses shaped for immediate frontend work, no backend wait while real backends are still being built.
Last updated October 2026