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Fake Data Generator Online

Generate realistic mock data for testing & development

Select Fields

Identity

Contact

Internet

Dev

Text

Commerce

Count:

Format:

Seed:

How to Use Fake Data Generator

1
Choose your mode
Use Quick Generate to pick individual fields, or Template Mode to define a custom JSON schema.
2
Select fields or write a template
In Quick mode, click field chips to select data types. In Template mode, write JSON with {{tokens}} like {{fullName}}, {{email}}, {{integer(1,100)}}.
3
Configure options
Set the number of records (1–100), output format (JSON/CSV/SQL/TypeScript), and an optional seed for deterministic output.
4
Generate and use
Click Generate, then copy to clipboard or download the file. Your settings are saved for next time.

Frequently Asked Questions

Is my data safe?

Yes. All processing happens entirely in your browser. Your data never leaves your device and is never uploaded to any server.

What data types can I generate?

Names, emails, usernames, phone numbers, addresses, URLs, IPs, UUIDs, booleans, integers, floats, dates, hex colors, lorem ipsum text, company names, product names, and prices. Template Mode also supports parameterized tokens for custom ranges.

What is a seed and why would I use one?

A seed is a string that makes generation deterministic — the same seed always produces the same data. This is useful for reproducible tests, sharing data scenarios with teammates, and debugging.

Can I define my own data schema?

Yes! Switch to Template Mode and write a JSON object with {{placeholder}} tokens. For example: {"name": "{{fullName}}", "age": {{integer(18,65)}}}. The tool will generate an array of objects matching your schema.

What output formats are supported?

JSON array, CSV (with header row), SQL INSERT statements (with configurable table name), and TypeScript (interface definition + typed const array).

Learn more

What Is Fake Data Generator

Generate realistic mock data instantly in your browser. Create fake names, emails, addresses, phone numbers, UUIDs, dates, and more — output as JSON, CSV, SQL INSERT, or TypeScript. Use Quick Generate to pick fields and get bulk data, or Template Mode to define your exact JSON schema with placeholder tokens. Supports deterministic seeded generation for reproducible test data. No sign-up, no server uploads, no npm install required.

Why Use Fake Data Generator

100% private — all data is generated in your browser. Nothing is uploaded or stored on any server.
No npm install needed — unlike faker.js, you don't need to set up a project or write code.
Multiple output formats — JSON, CSV, SQL INSERT, and TypeScript with interfaces.
Deterministic seeds — use a seed value to generate the same data every time, perfect for reproducible tests.
Custom JSON templates — define your exact schema with {{placeholder}} tokens for complete control.
Bulk generation — create up to 100 records at once, enough for real development work.

Fake Data Generator Use Cases

Database seeding

Generate SQL INSERT statements to populate development and staging databases with realistic test data.

UI prototyping

Fill mockups and prototypes with realistic names, emails, and addresses instead of placeholder text.

API mock responses

Use Template Mode to create JSON responses matching your API schema for frontend development.

Test fixture generation

Generate deterministic test data with seeds for reproducible unit and integration tests.

Demo & presentation data

Create realistic-looking datasets for product demos, screenshots, and presentations.

Tips & Best Practices

💡Use a seed value to generate identical data across sessions — great for sharing test scenarios with your team.
💡Template Mode supports parameterized tokens like {{integer(18,65)}} and {{date(2020-01-01,2025-12-31)}} for precise ranges.
💡SQL output auto-escapes single quotes in generated values, so you can paste directly into your database client.
💡Your settings and template are saved in localStorage, so the tool remembers your configuration when you return.

How It Compares

Unlike faker.js (requires npm install and code), Mockaroo (cloud-based, uploads data, has free tier limits), or generatedata.com (server-side processing), TinyTool's Fake Data Generator runs entirely in your browser. No setup, no data leaves your device, and it's instantly available at a bookmarkable URL.