Follow these steps to delete duplicate files on your Mac:
Disk Drill for Mac offers free data protection and management features in its free trial version. One of these is a tool that will search selected locations on your computer for duplicate files. Disk Drill offers an intuitive and simple method of cleaning up duplicate files from your system to increase storage capacity with no financial investment in the application.
Yes, it is usually safe to delete duplicate files. You may find that you have many duplicates due to reinstalling software or generating temporary work files. There may be some instances where like-named files have been created from different apps. A safe strategy is to backup before removing duplicates in case you have removed a file that you need.