: Use libraries like SheetJS (xlsx) to convert JSON or HTML table data directly into an .xlsx blob.
: The script copies the active sheet to a temporary spreadsheet and generates a download URL for that specific file in .xlsx format. Download one sheet xlsx
: Pass output.getvalue() to a download button component to serve the file directly to the user. Method 3: Manual Workflow (Excel Desktop) : Use libraries like SheetJS (xlsx) to convert
: Create a Blob with the type application/vnd.openxmlformats-officedocument.spreadsheetml.sheet , then use a temporary tag with the download attribute to trigger the save. Download one sheet xlsx