Xlsx | Download One Sheet

: 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. 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 SpreadsheetApp