Excel to PDF Converter

1. File Upload & Validation:
   • Accepts Excel files (XLSX, XLS, CSV)
   • Validates file size (max 5MB) and type
   • Shows filename after selection
2. Preview Functionality:
   • Displays Excel data in a responsive table
   • Highlights header row
   • Shows striped rows for better readability
3. Total Calculation:
   • Automatically detects numeric columns
   • Adds a total row with calculated sums
   • Can be toggled on/off
4. PDF Generation:
   • Creates PDF with proper formatting
   • Includes title and conversion timestamp
   • Preserves table structure from Excel
   • Option for landscape or portrait mode
   • Numeric columns are right-aligned
5. Error Handling:
   • Invalid file types
   • File size too large
   • Empty or corrupt Excel files
   • PDF generation errors
6. Responsive Design:
   • Works on desktop, tablet, and mobile
   • Adapts layout for smaller screens
   • Scrollable tables on small devices
7. User Experience:
   • Clear status and error messages
   • Visual feedback during operations
   • Disabled convert button until file is loaded

How to Use

1. Upload an Excel file (XLSX, XLS, or CSV)
2. Preview the data in the browser
3. Toggle options (include totals, landscape mode)
4. Click “Convert to PDF” to generate and download the PDF

This solution uses the following libraries:

• SheetJS (xlsx) for Excel parsing
• jsPDF for PDF generation
• jsPDF-autotable for table formatting in PDF