Deleting files that aren't being used

Idea created by on Mar 28, 2019
    Open for Voting

    I want to clean up my images files folder, but don’t want to delete anything by accident.There isn't a way to do this besides going page by page to see what images are on there and then to my files folder and deleting. A way to see what files are not being used and to select them to delete en masse would be so much easier and safer.