Export Google Docs as Markdown
Install this Google Docs add-on from the Google Web Store.
Open Google Docs and the add-on should be available from the Add-ons menu.
Currently the add-on only supports emailing the resulting markdown and image files to the email for your Google account. Feel free to create a Pull Request with new export methods!
You will need to accept the authorization request.
After a moment you should receive an email with the conversion.
Done!
gdocs2md Google App Script was originally created by Renato Mangini.