Within a minute the app will give a report with all duplicate files by categories: images, videos, music, archives, documents, and all other specific extensions. It's really easy to see how much space each file takes.

Features:

SCANNING
- fast scanning algorithm
- scanning for duplicates in multiple folders or drives
- external drives & mounted network folders support
- "Recent Folders List" for scanned folders
- animated scanning process
- skip list for various files & folders

RESULTS OVERVIEW
- visual chart report when scanning
- duplicate files list
- duplicate files by types

DUPLICATES
- built-in duplicates search
- preview & quick look for every file
- sort duplicates (by name, size, total size, type, and duplicates count)

REMOVING
- visual progress bar of selected files for removal
- one-click selection of multiple duplicate files
- smart duplicates autoselection
- "always select" & "never select" autoselect options
- confirmation list of deleted files
- moving to Trash or permanent removal option

UPGRADE TO PRO, In-app purchase
- preview & use visual report on duplicates scan
- find duplicates in hidden folders
- find duplicate folders
- find SIMILAR folders (folders that have both unique & duplicate files)
- use intelligent cleanup hints

Compatibility: OS X 10.9 or later, 64-bit processor

More info - https://itunes.apple.com/us/app/primefile-free-duplicate-file/id1032755628?mt=12