May 2018 Update
The script originally suggested in this answer appears to no longer work and has not been updated for 5 years.
An alternative solution (which is based on the old script) can be found at https://github.com/evbacher/gd2md-html
I tried it out, it works pretty well.
Previous Answer
You can use a Google Script to do the conversion for you!
This one will let you convert to .md and it will email you the converted file. I've tested it and works fine. It works with basic tables, and if you have images in the doc, it will attach them to the email.
Instructions for installing are on the same link, in the GitHub description, but I pasted it here for ease of access:
Add the script:
- Open your Google Drive document (http://drive.google.com)
- Tools ->
Script Manager > New
- Select "Blank Project", then paste this code in
and save.
- Clear the myFunction() default empty function and paste the
contents of converttomarkdown.gapps into the code editor
- File -> Save
Run the script:
- Tools > Script Manager
- Select "ConvertToMarkdown" function.
- Click Run
button (First run will require you to authorize it. Authorize and run
again)
- Converted doc with images attached will be emailed to you.
Subject will be "[MARKDOWN_MAKER]...".
Good luck!