How to Generate Mock Data Online

Generate realistic mock data for APIs, databases, and testing. Names, emails, addresses, dates — all fake but realistic. Free browser-based generator.

Open API Mock Generator →

Step-by-Step Guide

1

Choose your data schema

Define the fields you need — names, emails, phone numbers, addresses, dates, UUIDs, or custom patterns. Select data types from the dropdown or write a JSON schema.

2

Set the quantity

Choose how many records to generate — from 1 to 1,000. Perfect for seeding a database, testing pagination, or filling a UI prototype with realistic content.

3

Generate instantly

Click generate and get realistic-looking data immediately. Names match locale patterns, emails use proper domains, dates fall within sensible ranges, and addresses look real.

4

Export as JSON or CSV

Copy the generated data as JSON for API mocking, or download as CSV for spreadsheets and database imports. Use it directly in Postman, your test suite, or frontend prototype.

Try It Now — Free

No signup, no download. Runs entirely in your browser.

Open API Mock Generator

Frequently Asked Questions

Is the generated data truly random?
Yes. Each generation produces unique data using randomized algorithms. Names, emails, and addresses are composed from realistic components but never match real people.
Can I generate data matching my API schema?
Yes. Paste your JSON schema or define custom fields with types (string, number, boolean, date, email, uuid) and the generator will produce matching data.
How much data can I generate at once?
Up to 1,000 records per generation. For larger datasets, generate multiple batches and combine them. Everything runs in your browser with no server limits.
Related Reference

GraphQL Cheat Sheet

View Cheat Sheet →

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