Spreadsheet Sheet Downloader 제작자: dwarjie

A browser extension that enables downloading individual sheets from Google Spreadsheets with enhanced functionality for combining multiple sheets into a single Excel file.

🚀 Functionalities

Core Functionality
- Single Sheet Download: Download individual sheets from Google Spreadsheets
- Multi-Sheet Download: Combine multiple sheets into a single Excel file
- Smart Sheet Detection: Automatically detects available sheets in the spreadsheet
- Sheet Selection: Interactive modal for selecting which sheets to download

User Experience
- Seamless Integration: Appears as a download button next to Google Sheets' version history
- Modern UI: Clean, intuitive interface with smooth animations
- Loading Overlays: Prevents user interaction during processing
- Warning Notifications: Informs users about potential compatibility issues

Technical Features
- Client-Side Processing: No server required, all processing happens in the browser
- Cross-Browser Support: Works on Chrome and Firefox
- Manifest V3: Built with the latest browser extension standards
- Modular Architecture: Clean, maintainable codebase

🎯 Usage

Single Sheet Download
1. Open a Google Spreadsheet with multiple sheets
2. Navigate to the sheet you want to download
3. Click the green download button (appears next to version history)
4. Select "Single Sheet Download" in the modal
5. Click "Confirm" to download the current sheet

Multi-Sheet Download
1. Open a Google Spreadsheet with multiple sheets
2. Click the green download button
3. Select "Multi-Sheet Download" in the modal
4. Choose which sheets to include in the combined file
5. Click "Download" to generate and download the combined Excel file

⚠️ Known Limitations

Browser Compatibility
- Chrome: Full functionality with optimal performance
- Firefox: Basic functionality works, but multi-sheet downloads may have issues

Formatting Limitations
- Multi-sheet Downloads: May lose some formatting when combining sheets
- Complex Formatting: Advanced Google Sheets formatting might not be preserved
- Charts and Images: Not supported in combined downloads

📞 Support

If you encounter any issues or have questions:

1. Check the https://github.com/dwarjie/spreadsheet-sheet-downloader page
2. Search existing issues before creating a new one
3. Provide detailed information about your environment and the issue
4. Include browser console logs if applicable