What kinds of data can it produce?

Realistic names, emails, phone numbers, addresses, companies, products and more, drawn from a curated Faker-style dataset. You can either pick a built-in schema (user, product, company, ...) or define your own typed schema field by field.

Which export formats are supported?

JSON, CSV, SQL INSERT statements, and TypeScript (a typed array of objects). Switch tabs to copy or download whichever format fits the next step in your pipeline.

Are results reproducible with a seed?

Yes — setting a seed produces the same dataset across runs, which is useful for tests and fixtures that need stable data. Clear the seed for fresh, non-reproducible output.

Is anything uploaded?

No. Generation runs entirely in your browser; only the initial page load hits the network.

Mock Data Generator

Generate realistic mock data for testing, prototyping, and development

Generation Settings

Data Type

Count

Output Format

Data Type Examples

User Data Fields

• ID (number)

• Name (full name)

• Email (valid email)

• Phone (formatted number)

• Address (full address)

• Company (company name)

• Join Date (ISO date)

• Is Active (boolean)

Usage Examples

Development & Testing:

• Populate databases with test data
• Test API endpoints with realistic data
• Create seed data for development environments
• Generate sample data for unit tests

Design & Prototyping:

• Fill mockups with realistic content
• Test UI layouts with various data lengths
• Create demo data for presentations
• Validate data visualization designs

About this tool

Generate realistic test data in multiple formats for development and testing Mock Data Generator runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.

What this tool does not do

Mock Data Generator is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.

How do I use this tool?

How do I use Mock Data Generator?
Open Mock Data Generator, enter or paste your input, and copy the result. The page works without an account.

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