Instant • private • developer-friendly

Fake API Response Mocker

Build a simple field schema and generate realistic fake JSON API responses instantly, for prototyping and testing.

Mock JSON response

🔒 Your schema stays on your device and is never uploaded.

Prototype against realistic fake data

Before a real API exists, front-end work still needs believable sample data. Define field names and types once to generate one or many JSON records with realistic names, emails, IDs and dates, ready to paste into a mock server or fixture file.

Multiple field types

Strings, names, emails, UUIDs, booleans, numbers and dates in any combination.

Single or bulk output

Generate one object or an array of dozens of records with a single click.

Private by design

All generation happens locally in your browser using built-in word lists.

Fake API response mocker FAQ

What field types are supported?

String, full name, email, UUID, boolean, integer, float, date and a nested array of the same schema shape.

Can I generate multiple records at once?

Yes. Set the record count to generate an array of that many objects matching your schema.

Is the generated data realistic?

It uses built-in word lists for names and realistic patterns for emails, dates and IDs, but the values are randomly generated and not real people or records.

Is my schema uploaded anywhere?

No. The schema and generated data both stay in your browser.