https://github.com/sorawebui/format.im
Format.im: Professional Invoice Number Generator
https://github.com/sorawebui/format.im
Last synced: 5 months ago
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Format.im: Professional Invoice Number Generator
- Host: GitHub
- URL: https://github.com/sorawebui/format.im
- Owner: SoraWebui
- Created: 2025-01-20T11:35:14.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2025-01-21T05:13:52.000Z (over 1 year ago)
- Last Synced: 2025-05-13T00:55:01.200Z (about 1 year ago)
- Language: HTML
- Homepage: https://format.im/
- Size: 832 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# 🔢 [Invoice Number Generator](https://format.im/)
A professional online tool for generating invoice numbers, built with pure HTML, CSS, and JavaScript. Perfect for businesses, developers, and accounting software integration.
## 🌟 Features
- Multiple numbering formats (Sequential, Date-based, Client-based)
- Excel/Google Sheets compatible
- Custom prefix and suffix support
- Bulk generation capability
- No registration required
- Free to use
## 🚀 Live Demo
Try it now: [https://format.im/](https://format.im/)
## 📝 Invoice Number Formats
### Basic Format Structure
```
[PREFIX]-[MAIN_NUMBER]-[SUFFIX]
```
### Invoice Number Supported Formats
1. **Sequential Numbers**
```
INV-0001
INV-0002
INV-0003
```
2. **Date-Based**
```
20240121-001
20240121-002
INV/2024/001
```
3. **Client/Project Based**
```
CLI001-INV-001
PRJ001-INV-001
```
4. **Financial Year**
```
FY24-0001
FY24-0002
```
## 💡 Implementation Guide
### JavaScript Implementation
```javascript
function generateInvoiceNumber(format, counter, options = {}) {
const {
prefix = 'INV',
suffix = '',
padding = 4,
separator = '-'
} = options;
const date = new Date();
const year = date.getFullYear();
const month = String(date.getMonth() + 1).padStart(2, '0');
const day = String(date.getDate()).padStart(2, '0');
const number = String(counter).padStart(padding, '0');
switch (format) {
case 'sequential':
return `${prefix}${separator}${number}${suffix ? separator + suffix : ''}`;
case 'date':
return `${year}${month}${day}${separator}${number}`;
case 'fiscal':
return `FY${year.toString().slice(-2)}${separator}${number}`;
default:
return `${prefix}${separator}${number}`;
}
}
```
### Python Implementation
```python
from datetime import datetime
def generate_invoice_number(format_type, counter, **options):
prefix = options.get('prefix', 'INV')
suffix = options.get('suffix', '')
padding = options.get('padding', 4)
separator = options.get('separator', '-')
now = datetime.now()
number = str(counter).zfill(padding)
formats = {
'sequential': f"{prefix}{separator}{number}{separator + suffix if suffix else ''}",
'date': f"{now.strftime('%Y%m%d')}{separator}{number}",
'fiscal': f"FY{str(now.year)[2:]}{separator}{number}"
}
return formats.get(format_type, formats['sequential'])
```
## 🔍 Best Practices
1. **Uniqueness**
- Never reuse invoice numbers
- Use sufficiently large padding (e.g., 4 digits minimum)
- Consider adding business unit identifiers for multiple departments
2. **Consistency**
- Maintain consistent format throughout the fiscal year
- Use clear separators between components
- Keep a logical sequence
3. **Readability**
- Avoid ambiguous characters (I, l, O, 0)
- Use meaningful prefixes
- Limit total length to 15-20 characters
4. **Compliance**
- Follow local tax regulations
- Include year/date information when required
- Maintain proper audit trails
## 💻 Technical Details
### Features Implementation
- Pure HTML/CSS/JavaScript
- No external dependencies
- Cross-browser compatible
- Mobile responsive
- Clipboard API integration
## 🤝 Contributing
Contributions are welcome! Feel free to submit issues and enhancement requests.
1. Fork the repository
2. Create your feature branch (`git checkout -b feature/AmazingFeature`)
3. Commit your changes (`git commit -m 'Add some AmazingFeature'`)
4. Push to the branch (`git push origin feature/AmazingFeature`)
5. Open a Pull Request
## 📜 License
This project is licensed under the MIT License .
## 🙏 Acknowledgments
- Inspired by real-world business needs
- Built with modern web standards
- Community feedback and contributions
## 📞 Support
For support and questions, please [open an issue](https://github.com/SoraWebui/format.im/issues) or contact us at support@format.im.
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