DocDocDoc provides a browser extension for Google Docs. The extension is designed to connect your current Google Doc to the DocDocDoc editor by reading the active Google Docs page context, extracting the document ID from the current URL, and opening the matching document in DocDocDoc.

Data: the current Google Docs URL and document ID, plus minimal page state needed to render the injected button.
Purpose: opening the active Google Doc in the DocDocDoc editor.
Storage: the extension does not use browser storage for settings and does not store document contents.
Sharing: the extension does not upload Google Doc contents to DocDocDoc. When you click the button, only the document identifier is used to open the editor.