Assume a publicly shared Google Spreadsheet is created and shared with a lot of audience. Being an end user, you may not know who have authored the document. Because Author's Name and Email is not displayed usually on the spreadsheet.

I have developed a tool which can extract out Google Spreadsheet's author's email and name.
Checkout that tool -- "GADE" (GoogleSheet Author's Details Extractor).

Tool Link: https://gade.bipul.in