Mock Data Generator
Generate realistic fake data for testing, demos, and development. Export as JSON or CSV. All generated locally — no server calls.
Free Test Data Generator & Mock Data Generator — Generate Dummy Data, Mock Data for Demos & API Mockups
Need realistic test data for your app? This free mock data generator creates fake users, addresses, companies, API responses, and dummy database entries — perfect for prototyping, testing, populating dev databases, and building demos. Export as JSON or CSV. No API calls, no server, all in your browser.
When to use: Filling a dev database, testing API endpoints, creating demo accounts, writing unit tests, prototyping UI components.
FAQ
What is a mock data generator?
A mock data generator creates realistic but fake data for software testing and development. It helps you populate databases, test APIs, and prototype UIs without using real user information.
Is the generated data real?
No. All data is randomly generated from preset name lists, company names, and address patterns. None of it corresponds to real people or businesses.
Can I use this for production databases?
Yes — it's great for seeding development and staging databases. Since data is fake, there are no privacy concerns.
What output formats are supported?
JSON (array of objects), CSV (with headers), and plain text. For API responses, it generates the full response envelope with status codes.
How many records can I generate?
Up to 1,000 records per generation. For larger datasets, generate multiple batches.
Where is my data processed?
Everything runs in your browser. No data is sent to any server — we never see what you generate.
Is this tool free?
Yes, completely free. No signup, no limits.
How to create mock data for testing?
Just select the data type you need (users, addresses, companies, or API responses), choose how many records, and click Generate. Copy the output or download as JSON/CSV. No setup, no signup — everything happens in your browser.
Can I contribute more data templates?
Yes! The project is open source at github.com/Linanxi12/devbox-tools. Contributions welcome.