: Pass output.getvalue() to a download button component to serve the file directly to the user. Method 3: Manual Workflow (Excel Desktop)
: 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.
To develop a feature for downloading a single sheet as an .xlsx file, the implementation depends on whether you are working within an existing platform (like Google Sheets) or building a custom web application. Download one sheet xlsx
: Use SpreadsheetApp.getUi().showModalDialog() to display a "Click to Download" link to the user. Method 2: Custom Web App (JavaScript / Python)
For a custom dashboard or website, you need to generate the file in memory and trigger a browser download. : Pass output
: The script copies the active sheet to a temporary spreadsheet and generates a download URL for that specific file in .xlsx format.
: Use the XlsxWriter or Pandas libraries to write a single dataframe to an in-memory buffer ( BytesIO ). : Use SpreadsheetApp
: Use libraries like SheetJS (xlsx) to convert JSON or HTML table data directly into an .xlsx blob.