Mac에서 사진 보관함의 중복 항목을 제거하는 방법

In the Photos app, the Duplicates album under Utilities only surfaces images with matching content and metadata, essentially the same file imported more than once, often from syncing the same library across devices or re-importing a backup.

It intentionally leaves out anything that is merely similar, even if visually identical to the eye, because Apple's tool is conservative by design.

Burst mode, HDR pairs, and shooting the same scene several times because the light changed all produce images that are different files but the same moment. None of these show up in Apple's Duplicates album, yet they are usually where most of the reclaimable space actually is.

Vision AI: Photo Cleaner scans for these using on-device similarity detection, with a threshold you control, so you decide how close two photos need to be before they are grouped together.

Deleting inside the Photos app removes the photo from every synced device through iCloud, which is exactly what you want for a true duplicate. Items go to the Recently Deleted album for 30 days first, so a mistaken removal is recoverable.

Every group in the scan shows one suggested best copy already marked to keep, so clearing a group in bulk never risks losing the shot itself.