Data Generator Using HTML, CSS and JavaScript with Source Code
Welcome to Data Generator, your comprehensive solution for creating realistic test data with just a few clicks. This powerful web application is designed specifically for developers, testers, and data professionals who need high-quality sample data for software development, testing environments, and demonstration purposes. Whether you're building a new application, conducting quality assurance tests, or preparing presentation materials, our tool provides instant access to various data types in multiple formats—all generated directly in your browser without any server dependencies or external API calls.
Our intuitive interface makes data generation effortless while offering advanced customization for experienced users. You can generate personal information, financial records, business data, geographic coordinates, and internet-related data—all fictional yet realistically structured. With support for JSON, CSV, XML, and SQL output formats, plus features like custom schema definition, generation history, and reproducible random seeds, Data Generator adapts to your workflow needs while ensuring data privacy and security through client-side processing.
You may also check this simple HTML, CSS and JavaScript project:
Key Features:
- Generate multiple data types including personal, financial, business, geographic, and internet-related data
- Export in JSON, CSV, XML, and SQL insert formats
- Define custom schemas for tailored data generation
- Generation history with quick access to previous outputs
- Copy to clipboard and file download functionality
- Responsive design for desktop and mobile use
- Real-time statistics (record count and data size)
- Multiple locale support for international formats
- Random seed option for reproducible data sets
- Tab-based interface for organized workflow
- Toast notifications for user feedback
- Modern UI with clean, intuitive controls
Technologies Used:
- HTML5 for semantic structure and accessibility
- CSS3 with Grid and Flexbox for responsive layouts
- JavaScript ES6+ for application logic and data generation
- Font Awesome icons for visual enhancements
- CSS Custom Properties for theming consistency
- Local Storage API for saving generation history
- Clipboard API for copy functionality
- Blob API for file download operations
How to Use:
- Select the desired data type from the dropdown menu.
- Choose the number of records to generate (1–1000).
- Select your preferred output format (JSON, CSV, XML, or SQL).
- Configure additional options such as headers or unique values.
- Click Generate Data to create your dataset.
- Use the copy button for quick clipboard access.
- Download data as a file for later use.
- Access the Advanced tab to define custom schemas in JSON.
- View previous outputs in the History tab.
- Modify the random seed for reproducible datasets.
- Switch locales to generate region-specific formats.
Sample Screenshots of the Project
Landing Page

Other Data

How to Run?
- Download the provided source code zip file.
- Extract the downloaded zip file.
- Open the html file and you are now ready to go!
Video Demonstration for Installation/Setup:
Conclusion:
In conclusion, Data Generator represents a significant advancement in test data creation, offering an efficient, secure, and versatile solution that streamlines workflows while maintaining data quality and realism—ultimately accelerating development cycles and enhancing testing accuracy across diverse project requirements.
That's it! I hope this "Data Generator Using HTML, CSS and JavaScript" will assist you on your programming journey, providing value to your current and upcoming projects.
For additional tutorials and free source codes, explore our website.
Enjoy Coding :>>
Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.
Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.
FOR YOUR OWN SAFETY, PLEASE:
1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.