Dropbox allows you to restore earlier versions of any file. The fee edition of Dropbox allows use of previous versions of files over the last 30 days, but the paid editions have an option known as “Packrat” that allows unlimited undo history.
To access this feature, launch the Dropbox website. Go to the folder where you want to see a previous version of a file and hover over the file to highlight it. Don’t click on the name of the file because that will open the file. Right click on the row to & select “previous versions”. A list of all the previous versions available over the past 30 days will appear. Select the relevant version the click “Restore”.