DCP DITA Import Add-on allows you to import DITA a large number of documents into Google Doc. Simply click "start" in the menu and select your source DITA folder. The output Google Docs can be found under the same folder of your source documents.

This tool is a component of Dakota Content Platform, check our DCP (Dakota Content Platform) Add-on in G Suite Marketplace for more detail.
https://gsuite.google.com/marketplace/app/dakota_content_platform/132905849440