Can this show me who last edited the file?

It shows the Author field the workbook was saved with, if the software that created it set one.

Excel Metadata Viewer

Excel Metadata Viewer shows a workbook's title, author, subject, keywords, and sheet count.

Click to upload a fileor drag and drop

Set an Excel workbook's document properties.

See row, column, and cell counts for a workbook.

Combine multiple PDF files into one document.

Split a PDF into individual single-page files.