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Generate Realistic Mock Data for Development Projects
A powerful tool for generating realistic mock data in multiple formats including JSON, SQL, CSV, TypeScript, and Excel. Perfect for fullstack development, testing, and prototyping.
The Data Generator tool creates realistic mock data for your development projects. Whether you need user profiles, product catalogs, blog posts, or financial data, the tool has you covered.
Tip: Use the optional seed value to generate reproducible data. The same seed will always produce the same mock data.
Choose from five different data types, each with specialized fields and realistic data generation.
Generate user profiles with personal information, addresses, and preferences.
Create product catalogs with pricing, inventory, and detailed specifications.
Generate blog posts and articles with SEO metadata and engagement metrics.
Create company profiles with business details and social media links.
Generate financial transactions with detailed payment and location data.
Export your generated data in the format that works best for your project. All formats include properly formatted data with realistic values.
JavaScript Object Notation - Perfect for APIs and web applications.
Extension: .json
Comma Separated Values - Great for spreadsheets and data analysis.
Extension: .csv
SQL INSERT statements - Ready to import into databases.
Extension: .sql
TypeScript interfaces and data - Type-safe for development.
Extension: .ts
Excel-compatible CSV - Opens directly in Microsoft Excel.
Extension: .csv
Formatted Excel workbook - Full formatting, filters, and styling.
Extension: .xlsx
Tip: SQL exports include CREATE TABLE statements with proper data types. TypeScript exports include fully typed interfaces.
Configure the basic settings for your data generation.
Set how many records to generate (1-1000). Larger batches may take longer to generate.
Default: 10 records
Choose the locale for generating region-appropriate data like names, addresses, and phone numbers.
Options: en-US, en-GB, es-ES, fr-FR, de-DE
Enter a numeric seed for reproducible results. The same seed will always generate the same data.
Default: Random seed
Fine-tune your data generation with advanced settings including field configuration, data relationships, and quality controls.
Enable or disable specific fields for each data type. Customize field properties like min/max values and custom options.
Generate culturally appropriate data for different regions.
Currently supported locales affect:
Set the currency for financial data and pricing:
Control the quality and realism of your generated data by adjusting these settings.
Percentage of records that may contain duplicate data (0-20%).
Default: 0%
Percentage of nullable fields that will be null (0-30%).
Default: 5%
Percentage of records with intentionally invalid data (0-10%).
Default: 0%
Percentage of data that should be logically consistent (50-100%).
Default: 90%
Optimize data generation performance for large datasets.
Number of records to generate per batch (100-10,000).
Default: 1000 records per batch
Enable parallel processing for faster generation of large datasets.
Default: Enabled
Reduce memory usage for very large datasets at the cost of speed.
Default: Disabled
Cache generated data for faster re-exports.
Default: Enabled
Generate realistic mock data for testing UI components, forms, and data visualization without needing a backend.
Create sample API responses and test data for API development and documentation.
Generate SQL INSERT statements with proper schema for populating test databases.
Quickly populate demo environments with realistic sample data for client presentations.
Export data with fully typed TypeScript interfaces for type-safe development.
Generate sample datasets in CSV or Excel format for analysis and reporting prototypes.