Dupe guide

Find duplicate documents on Mac

Word docs, Pages files, text notes, and exported reports all duplicate over time. Here's a safe way to find the copies.

4 min read

Documents are sneaky duplicators. You email yourself a draft, save it to Desktop, save it again into a project folder, then a year later your “Documents” folder has three Word files and two Pages files all containing the same draft of the same letter.

Two paths

The native way: Finder smart folders

You can build a Smart Folder that helps:

  1. In Finder, choose File > New Smart Folder.
  2. Click the + to add a filter. Set “Kind: Document.”
  3. Add another filter for “Last opened date” or “File size” depending on what you’re hunting.
  4. Sort the results by Size and Name to spot pairs.
  5. Open suspected duplicates side-by-side to confirm before deleting.

This narrows the haystack but doesn’t actually compare contents. Two .docx files with the same size aren’t necessarily the same document — and two genuinely identical documents saved with different names won’t catch your eye unless you open them.

The Dupe way

Dupe hashes file contents with SHA-256, so duplicates are detected regardless of filename, folder, or save date.

  1. Download Dupe and open it.
  2. Click “Add Folder” and add Documents, Desktop, Downloads, iCloud Drive (specifically the Documents subfolder), and any project folders.
  3. Click “Scan.” Dupe walks every .docx, .doc, .pages, .txt, .md, .rtf, .numbers, .xlsx, .key, .pptx, and more.
  4. Review duplicate groups by file type.
  5. Pick which copies to keep — Dupe can pre-select by deepest path or oldest date — and click “Move to Trash.”

What Dupe won’t catch (and why that’s fine):

Safety:

Most people find a few hundred duplicate documents on a scan — drafts emailed to themselves, multiple Desktop copies of the same template, exported reports saved twice. Reclaim a few gigabytes and your Cmd+F searches get cleaner.

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