How To Erase Duplicate Photos On Mac | Built-in Tool Guide

To erase duplicate photos on a Mac, the best method is the built-in Duplicates album in the Photos app on macOS 13 or newer.

A cluttered library of identical shots wastes storage and makes finding the right image harder. The best way to learn how to erase duplicate photos on Mac is to open the Photos app and check for the Duplicates album first. If you are running macOS 13 Ventura or later, Apple included a dedicated tool that handles this automatically.

This guide covers the official Apple method, manual workarounds for older systems, and the best third-party tools for deep cleaning.

Erasing Duplicate Photos on Mac: The Step Order That Works

The safest and fastest route is Apple’s built-in Duplicates album. It scans your Photos library automatically and groups identical photos and videos together for review. You do not need to download anything or risk losing the wrong file.

Here is how the official workflow works:

• Open the Photos app on your Mac.
• Look for Duplicates under the Utilities section in the sidebar. If you cannot see it, hover your cursor over Utilities and click the Show button that appears.
• If you use an iCloud Shared Photo Library, set the Library pop-up menu at the top to Both Libraries so duplicates from both libraries appear.
• Select one or more duplicate groups. Press Command-A to select all groups at once.
• Click Merge [Number] Items, then confirm by clicking Merge [Number] Items in the dialog box.

Once merged, one original photo or video remains in your library. The deleted duplicates move to the Recently Deleted album, where they stay for 30 days in case you need to recover them.

Does the Duplicates Album Delete Originals?

No. Merging duplicates in Photos does not instantly delete your files. Apple’s system keeps the highest-quality version in your main library and sends the extras to Recently Deleted. You can recover them or permanently erase them from that folder.

This safety net makes the built-in tool the best first step for anyone learning how to erase duplicate photos on Mac. It prevents accidental data loss while still clearing the extra copies that eat up your storage quota.

Can I Erase Duplicates on an Older Mac?

If your Mac is running macOS 12 Monterey or earlier, the Photos app does not include the Duplicates album. You still have two reliable options: manual sorting with Finder or a dedicated third-party app.

For manual cleanup, a Smart Folder in Finder works well:

1. Open Finder and go to File > New Smart Folder.
2. Click the + button to add a search criterion.
3. Set the first rule to Kind is Image.
4. Add more rules like File Size, Date Created, or Name.
5. Sort the results, preview with Quick Look (press the Space bar), and move the wrong copies to Trash.

This approach takes longer and requires careful review, but it costs nothing and works on every version of macOS.

Table 1: Comparing the Best Ways to Erase Duplicate Photos

The table below breaks down the best options available. The built-in tool leads for speed and safety, but the alternatives fill specific gaps.

What About Third-Party Duplicate Photo Cleaners?

When the built-in tool cannot scan system-wide or your library contains thousands of files, third-party apps fill the gap. Photo Sweeper and PowerPhotos are the most frequently recommended by experienced Mac users for their accuracy and preview features. Gemini 2 offers a broader system-wide duplicate scan that includes files outside the Photos library.

The trade-off is cost and review time. Most of these apps charge between $10 and $30. They also require you to approve each deletion manually if you want to stay safe. Apple’s own support page on merging duplicates is the authoritative source for the free built-in process: Apple’s official guide for removing duplicates.

Table 2: Safety Guide for Each Cleanup Action

Understanding what happens to your files after each action prevents permanent loss. The table below shows the recovery window for the most common cleanup steps.

The Final Cleanup Checklist

Before you erase duplicate photos on Mac, run through this short list to make sure nothing valuable disappears. First, always review the duplicates in the Duplicates album before clicking Merge. Second, check the Recently Deleted album or Trash after the merge to confirm the files you want to keep are safe. Third, permanently empty the Recently Deleted folder only after a week of use to reclaim your storage space. This small routine takes ten minutes and saves hours of recovery time later. Now you know exactly how to erase duplicate photos on Mac using the safest tools available.