Dupe guide

Find duplicate files in your iCloud Drive on Mac

iCloud Drive duplicates eat into your iCloud plan. Here's a safe way to find them without breaking the sync.

4 min read

iCloud Drive duplicates cost you twice — once on disk locally and again against your iCloud storage quota. If you’re bumping up against your 200 GB or 2 TB plan, dedupe before you upgrade. Most iCloud Drives are full of duplicated PDFs, photos, and old project folders that got copied during a Mac migration.

Two paths

The native way: Finder + System Settings

iCloud Drive shows up in Finder under iCloud > iCloud Drive. You can browse it like any other folder, but with one catch: files marked “Optimized” might be dataless placeholders that need to download first.

  1. Open System Settings > Apple ID > iCloud > iCloud Drive and turn off “Optimize Mac Storage” temporarily so all files are local.
  2. Wait for everything to download.
  3. Open iCloud Drive in Finder, sort by Size.
  4. Look for files with identical sizes; verify pairs with Preview or shasum.
  5. Drag duplicates to the Trash. They’ll be removed from iCloud across all your devices.

This works but downloading “everything” can take hours, and manual comparison is unreliable past a few dozen files.

The Dupe way

Dupe handles iCloud Drive properly — including dataless placeholder files.

  1. Download Dupe and open it.
  2. Click “Add Folder” and select iCloud Drive (or a specific subfolder like Documents or Desktop, which sync via iCloud if you have that enabled).
  3. Click “Scan.” For files that haven’t downloaded yet, Dupe will request them from iCloud as needed.
  4. Review the duplicate groups by file path.
  5. Move copies to the Trash. Deletions sync to iCloud and remove from your other devices.

Important things to know about iCloud and dedupe:

Safety:

One scan of a long-lived iCloud Drive often frees enough space to drop down a storage tier.

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