Fake Data Generator

What is Fake Data Generator?

This Mock Data Generator is a free, browser-based tool for creating realistic dummy datasets for software development and testing. It lets you define fields with meaningful names, choose from 120+ data types (such as names, numbers, emails, UUIDs, dates, IDs, and custom values), and optionally set a blank/null percentage per field to simulate incomplete data. You can generate datasets ranging from small samples to large outputs (up to around one million rows depending on your device). The tool supports multiple output formats including CSV, JSON, Excel (.xlsx), XML, SQL INSERT statements, and HTML tables. It also supports defining data generation rules using JSON Schema, and includes an “AI Prompt” option to generate a JSON schema. Field configurations are saved locally in the browser and restored on return, with no registration required.

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