Google Docs to Markdown Without Uploading Your Document
Google Docs does not save the document body inside a .gdoc shortcut file. That shortcut points back to Google Drive. To convert a real document into Markdown, first download an export that contains the content.
Use DOCX for most documents
For ordinary drafts, reports, outlines, and documentation, download the Google Doc as Microsoft Word (.docx). DOCX preserves useful structure like headings, paragraphs, emphasis, links, lists, and many tables.
After downloading the DOCX, drop it into a browser-based Markdown converter. The original Google Doc remains in Google Drive, while the exported local copy is what gets converted.
Use HTML for web-shaped documents
If the document has web-style formatting, HTML can be a better export. HTML is especially useful when you care about links, headings, lists, code-like blocks, or content that already resembles a web page.
Markdown Safe strips scripts and styles from HTML before converting semantic content, which helps keep the output focused on editable text.
Avoid .gdoc shortcut files
A .gdoc file is not the document. It is a small local shortcut that points to Google Drive. It does not contain the paragraphs, headings, or tables you want to convert.
If a converter claims to process .gdoc files directly, read the privacy details carefully. It may need account access or a server-side Google Drive integration.
Bottom line
For the private path, download your Google Doc as DOCX or HTML, convert the export locally, and ignore .gdoc shortcut files for Markdown conversion.