Want to convert an Excel file (XLSX or XLS) to GPX format on Windows 11/10? Checkout a free software and online tool to do that.

To convert an Excel file to JPG, use PrintScreen, Snipping Tool, the Excel Camera tool, or use third-party Excel to JPG converters.

I don't think you need to turn the pivot table back into a flat file. The flat file exists elsewhere. Look on another sheet (or maybe it is pulling data from a DB) for the data source.