After creating a new file on udt.dev, navigate to
Samples > Import > Import from Google Drive
You'll be prompted to log in with google. After signing in, you can browse and search for files and folders within Google Drive.
Make sure that files have public share links, this will allow you or anyone you send your UDT file to to access the files without logging in to your Google Account.
After importing, your files will be converted to Samples. Check out the Samples or Labels page to view them!