How Can I Automatically Translate a PDF With Google or Another Free Service?

Hello, I want to create a macro using Keyboard Maestro to automatically download PDF files when a new file is added. I have Zotelo, which automatically downloads and places a copy of the file in a folder called "Thesis". I would like for a translated copy to be downloaded automatically into that folder when a file is added. I know it's possible, but I haven't found an optimal way to do it. The name of copy can be (ES) at the start and the same name of original PDF. Hope someone help me. Thank u all.