Get rid of duplicate files

Use a Smart Folder

> Create a Smart Folder with nothing in the search box, click ‘+’ then choose Kind from the left-hand menu and Document from the right-hand menu. Set the folder view to List and click the Name column to order by name. You should now be able to spot duplicate files by scrolling through the folder.

Gemini 2

> MacPaw’s Gemini scans for duplicate files. You can use it to scan your Mac or an external drive. When it’s finished, you can tell it to remove all the duplicates, or review and decide yourself. It can also detect similar files, say photos of the same place or building, or duplicate songs in Music.

Parallels Toolbox

> Parallels Toolbox is a suite of 30 tools for performing a variety of functions on your Mac. One of them is a duplicate file finder that enables you to point it at a folder and scan it for duplicates. Its developers say that it can even find duplicates with different file names but the same content.