To create an automatic "make a copy" link for a Google Docs, Sheets or Slides. Change the URL text after the file ID to copy:

• https://docs.google.com/spreadsheets/d/1snz6-TrdGi4y2lbxNc6IpUQ6whKEF-nGyQ2He71stJ8/edit to https://docs.google.com/spreadsheets/d/1snz6-TrdGi4y2lbxNc6IpUQ6whKEF-nGyQ2He71stJ8/copy 
  

To create an automatic "download" link for a Google Docs or Sheets.

• Google Sheets - change the edit?usp=sharing to export?format=xlsx
  https://docs.google.com/document/d/1wfTbwHJTlyLFSmDnizOqi04V5l1lUdRM-n4-MaLBtxQ/edit to https://docs.google.com/document/d/1wfTbwHJTlyLFSmDnizOqi04V5l1lUdRM-n4-MaLBtxQ/export?format=doc
  

• Google Docs - change edit?usp=sharing to export?format=doc or export?format=pdf
  https://docs.google.com/document/d/1wfTbwHJTlyLFSmDnizOqi04V5l1lUdRM-n4-MaLBtxQ/edit to https://docs.google.com/document/d/1wfTbwHJTlyLFSmDnizOqi04V5l1lUdRM-n4-MaLBtxQ/export?format=xlsx