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Fake Data Generator: Realistic Test Data as JSON, CSV or SQL

By Bilawal Hussain · 4 November 2026 · 2 min read
Fake Data Generator: Realistic Test Data as JSON, CSV or SQL

Testing an app with real customer data is risky. Generate realistic names, emails, phone numbers, prices and dates as JSON, CSV, SQL or a mock API response.

Open the free Fake Data & Mock API Generator →

What is the Fake Data & Mock API Generator?

Realistic test data (names, emails, phones, prices, dates) as JSON, CSV, SQL or a mock API response. It's completely free, needs no sign-up and works on any phone or computer.

Screenshot of the Fake Data & Mock API Generator on ReadyToUse
The Fake Data & Mock API Generator, as it looks on ReadyToUse.

Why it's helpful

Who it's for

Developers, testers and teams building demos.

How to use it

  1. List the fields you need with a type for each.
  2. Choose JSON, a paginated API response, CSV or SQL, then copy.
💡 Pro tip: Generate edge cases too: long names, empty fields and special characters catch bugs early.

💻 Open source: this tool is free and open source (MIT License). View the code on GitHub, download it and run it offline.

The bigger picture: Developer

Developers lose a surprising amount of time to small tasks: formatting data, decoding tokens, converting between formats and checking syntax. Fast in-browser tools keep you in flow and keep sensitive data off third-party servers.

What's changing: AI coding assistants now write a lot of code, but developers still need quick, trustworthy tools to inspect and verify what comes out: formatters, validators and decoders matter more, not less.

Frequently asked questions

Is the data real?

No. It is randomly generated and uses example.com emails, so it is safe for testing.

Ready to try it?
Use the Fake Data & Mock API Generator free →
No sign-up · Runs in your browser

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BH
Bilawal Hussain
Full-stack developer in Dubai and creator of ReadyToUse: free tools that just work. Connect on LinkedIn