Trello is a team collaboration tool that lets you organize anything and everything to keep your projects on task.
Your reviewer sees the current image or PDF proof link and revision on the task before deciding.
Your approval task shows whether the reviewer can open the current proof before the due date, with a request for a corrected link when needed.
Keep reviewers aware of changes to a proof before they act on a decision. Your task shows the mismatch and asks for confirmation.
Your original maker gets the rework task and sees why the reviewer rejected the proof, with the reason tied to the reviewed file.