Dupe guide

Clean up duplicate Mac screenshots

Screenshots pile up on the Desktop and in Pictures. Here's a safe way to find and remove the duplicates.

4 min read

Every Cmd+Shift+4 leaves a PNG on your Desktop. Over a year, that’s thousands. Plenty get taken twice, dragged into other folders, copied for use in messages, and re-saved. Your Desktop is a graveyard of Screen Shot 2024-… files and a fair number of them are byte-identical to ones in Documents, Downloads, or your messages history.

Where Mac screenshots actually live

By default, screenshots go to the Desktop. But many people change the location via the Cmd+Shift+5 toolbar > Options > Save to. So check:

Find duplicates with Finder

  1. Open Finder, Cmd+F.
  2. Search “Kind: PNG” and filter to filenames starting with “Screen Shot” or “Screenshot.”
  3. Switch to List view and sort by Size.
  4. Adjacent files with identical sizes are candidates.
  5. Preview suspected pairs to verify.

This catches obvious dupes but not screenshots you renamed when sharing them or copies sitting in folders far from Desktop.

Find duplicates with Dupe

  1. Install Dupe and open it.
  2. Click “Add Folder” and add Desktop, Documents, Downloads, Pictures, and anywhere else screenshots might have ended up.
  3. Click “Scan.” SHA-256 catches byte-identical PNG/JPEG files regardless of filename.
  4. Filter the results to focus on PNGs, or just sort by extension.
  5. Review groups — Dupe shows full paths so you can pick which copy to keep.
  6. Move copies to the Trash.

If you took the same screenshot twice (Cmd+Shift+4 over the exact same region with no changes), those aren’t byte-identical because the timestamps embedded in the PNG metadata differ. So Dupe won’t lump them together. To catch those, look at filenames and timestamps in Finder and judge by eye — or use a perceptual similarity tool. Dupe sticks to exact byte matches deliberately to avoid false positives.

Safety

A typical Desktop cleanup after a year of normal screenshot use trims hundreds of files and a couple of gigabytes.

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