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Data Generator

🚀 Create realistic sample data for testing, development, and prototyping. Generate JSON, CSV, and SQL data with customizable schemas and field types! ✨

Data Generator

Create realistic sample data for testing, development, and prototyping

Schema Information
Fields (0)

No fields yet. Click "Add Field" to get started.

Generation Settings
110,000

Schema Validation Errors

  • Schema must have at least one field
Schema Summary
Schema Name:New Schema
Total Fields:0
Unique Fields:0
Nullable Fields:0
Output Format:json
Quick Tips

• Use templates to get started quickly

• Set field constraints to control data ranges

• Mark fields as unique to avoid duplicates

• Export schemas to reuse configurations

• Large datasets may take longer to generate

About the Data Generator

The Data Generator is a powerful tool for creating realistic sample data for testing, development, and prototyping. Whether you're building APIs, testing databases, or creating mockups, this tool helps you generate structured data in multiple formats with customizable schemas and realistic field types.

✨ Key Features

  • • Visual Schema Builder - Drag-and-drop interface to define data structure
  • • 25+ Field Types - Names, emails, addresses, dates, UUIDs, and more
  • • Multiple Output Formats - JSON, CSV, and SQL with customizable options
  • • Pre-built Templates - Users, products, orders, employees, events, and blog posts
  • • Advanced Constraints - Min/max values, string lengths, date ranges, and patterns
  • • Data Relationships - Unique fields and foreign key constraints
  • • Export/Import - Save and share schema configurations
  • • Performance Optimized - Generate up to 10,000 records efficiently

🎯 Perfect For

  • • Developers - Testing APIs, databases, and applications
  • • QA Engineers - Creating test datasets for various scenarios
  • • Data Analysts - Generating sample data for analysis and reporting
  • • Students - Learning database design and data manipulation
  • • Prototypers - Creating realistic mockups with sample data
  • • Designers - Populating UI designs with realistic content

📊 Supported Field Types

Text & Names

  • • Text strings
  • • Person names
  • • Email addresses
  • • Usernames
  • • Lorem ipsum

Numbers & Dates

  • • Integers
  • • Decimals
  • • Currency
  • • Percentages
  • • Dates & timestamps

Geography & Web

  • • Addresses
  • • Countries & cities
  • • Coordinates
  • • URLs & domains
  • • IP addresses

Special Types

  • • UUIDs
  • • Phone numbers
  • • Credit cards (test)
  • • Boolean values
  • • Custom regex patterns

🚀 How to Use

  1. Start with a Template - Choose from pre-built schemas or create your own
  2. Define Your Schema - Add fields, set types, and configure constraints
  3. Set Generation Options - Choose record count and output format (JSON/CSV/SQL)
  4. Configure Output - Customize format-specific options like delimiters or SQL dialect
  5. Generate Data - Click generate to create your sample data
  6. Export Results - Copy to clipboard or download as a file

📄 JSON Output

Generate clean, formatted JSON arrays or objects with customizable property naming conventions (camelCase, snake_case, kebab-case).

📊 CSV Output

Export to CSV with configurable delimiters, header rows, and quote styles. Perfect for spreadsheet applications.

🗄️ SQL Output

Generate CREATE TABLE and INSERT statements for MySQL, PostgreSQL, SQLite, and SQL Server with proper data types.

💡 Pro Tips

  • • Use unique constraints sparingly for large datasets
  • • Set realistic field constraints to improve data quality
  • • Export schemas to reuse configurations across projects
  • • Test with small record counts first, then scale up
  • • Use enum fields for consistent categorical data
  • • Leverage templates as starting points for custom schemas

🔒 All data generation happens locally in your browser. No data is sent to external servers.

⚡ Optimized for performance with chunked generation and memory management.

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Added Jul 23, 2025

🔄 Workflow Suggestion

Try combining multiple tools for a complete workflow. For example: Notepad → Text Encryption → Save to Cloud or Date Calculator → Calendar → Countdown Timer

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