How to use this XLSX Viewer

• Upload an Excel file (.xlsx or .xls format) using the drag & drop area or browse button
• The spreadsheet will display in a full-screen table with column headers
• Use the "Close Spreadsheet" button to return to the upload screen
• All processing happens locally in your browser - no data is uploaded to any server
• This tool works best with spreadsheets that have a reasonable number of rows/columns