Google Drive is Google's file sync app that lets you store all of your files online alongside your Google Docs documents, and keep them synced with all of your devices.
Deliver the current proof for your review with a decision deadline.
Your reviewer gets the current proof and a clear decision deadline by email when a card is ready for review.
See the exact proof revision handed off for review.
Your review card shows the proof version your reviewer received, even if the linked file changes later.
Verify requested corrections in the latest proof file.
See which requested edits made it into a revised proof and which still need work, right beside the files on your review item.
Log your decision against the PDF proof you checked.
Your proof tasks show who decided, which file version they reviewed, and who takes the next step.