Proofing Google Drive Docs
Please note that proofing Google Docs websites is currently supported only as live website proofs.
If you want to proof a Google Doc in Ziflow please make sure that the Share settings on the Google Doc are changed to “Anyone with the link” and then review it as a Live Web Proof.
Once the document is published you can enter generated URL to Ziflow and start a website snapshot proof with it.
If you don't want to leave the Google Doc published, then you can go to the File -> Publish to the web and click on a "Stop Publishing" button.