Three Duplicate Cleaner for iPhoto and Photos Apps (macOS Catalina Included)

2016-09-21 21:50:54 / Posted by Peter William to Utility Follow @ Peter

How to bulk delete duplicate photos in iPhoto? My iPhoto on my mac contains multiple duplicates of my photos. I assume this is because of automatic syncing with my iPhone, so I have turned of the sharing until I figure it out. But is there a way to get rid of all the duplicates quickly without going through them all?? Thanks!  - From a Mac user who wants to find some duplicate cleaner for iPhoto and photos.

Duplicate photos always seem to find a way to creep into your iPhoto library, taking up precious storage space on your Mac. You can just let it go and forget all about it, after all it’s just a few duplicate photos. But if you’re anything like me, you just want your iPhoto library to be perfect. How to make your iPhoto library perfect? Here will recommend you three duplicate cleaner for Mac to locate and delete duplicate photos in iPhoto and on hard drive, then we will make comparison to decide which is the best duplicate photo finder for iPhoto and Photos. This article is divided into three parts which are listed as follows.

Part one: Three duplicate cleaner for iPhoto and Photos Apps

Cisdem Duplicate Finder for Mac

Cisdem Duplicate Finder for Mac is a Mac duplicate file finder which allows you to find and delete duplicate photos, images, songs, videos, document files, etc. It uses the most advanced scanning technology - MD5 value checksum algorithm to accurately detect identical photos and files. Its built-in flexible search settings allows you to quickly filter the duplicate photos or other files by number, size or scanning order. After the scanning and filtering, it will generate a straightforward file report for you to preview and decide which duplicate to delete. You can remove duplicate photos or other files manually. And you can use this duplicate photo finder to select multiple files at the same time to remove, which makes bulk file handling much easier. It contains no adware, no spyware and no other wanted software; it is 100% clean and safe. You can download it below to try it free.

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  • Support all file types like images, documents, audios, videos, archives, etc
  • Support external drives and network volumes scanning
  • Scan individual or multiple folders in one go
  • Simple user interface and support drag-n-drop to add folders
  • Built-in preview modes before deleting duplicates
  • Supports removing duplicates manually

Pros: It works very fast and ensures 100% accuracy. It supports locating duplicate photos in iPhoto and on hard drive and allows you to manually remove duplicates.It is very user-friendly and efficient.

Cons: It is not free, $29.99 for lifetime license. But it really worth the price.

Photo Sweeper

One of the most affordable duplicate finders in the App Store is Photo Sweeper. It is a simple and efficient utility for quickly organizing photos on your Mac. The app aims to help trim down your photo library by analyzing your photos and finding duplicate and similar images. It works with images loaded into your iPhoto, Aperture or Lightroom libraries or any photo that you drag into the application. There are six different options available for comparing your photos, depending on how closely you want to look at them. You can compare by Bitmap, Histogram, Time Interval, Time and Bitmap (which is the default search setting), Time and Histogram, or Duplicates, which will find only exact duplicates.


  • Supports all the popular image formats including RAW ones. Exclusive support of PDF, DNG and WebP formats
  • Finds duplicates with different image dimensions, color saturation, and even edited with applications, such as Photoshop, Pixelmator etc
  • Works great with Lightroom and fully compatible with Aperture 3.0 and later
  • Compares video files as well

Pros: It is fully compatible with Aperture, iPhoto and Lightroom. It supports PDF, DNG and WebP formats.

Cons: It does not work easily as the stating, it’s confusing and not intuitive. And it is not able to transfer pictures from any file. This app can’t accurately find the duplicates.


In order to stop wasting space on duplicates, Gemini finds duplicates on your Mac and removes them. Gemini is a duplicate file finder and cleaner app which can free up your hard drive space easily and quickly. It uses fast and accurate scanning algorithms to clean iTunes and iPhoto libraries and remove duplicates on Mac hard drive. It also works with external drives and network volumes.


  • Supports finding and removing duplicate files including photos, audios, etc
  • Supports locating and deleting duplicate folders
  • Drag and drop files, folders, or entire drives
  • Preview mode for double-checking files before removing
  • Advanced contextual menu for power users

Pros: Gemini is powerful and flexible. It supports removing duplicates from your music and photo libraries. It also support removing duplicate folders.

Cons: When you use Gemini to scan some large files, it becomes slow and will takes much time to finish scanning. And when you use Gemini to locate duplicates in iPhoto, this app can’t 100% accurately to find all the duplicates.If you’re searching for something very specific, Gemini won’t help you. This app will cost you $9.99.

Part two: Comparison among three duplicate cleaner for iPhoto and photos

In order to help you choose the best duplicate cleaner for iPhoto and Photos, we make a comparison of the three duplicate cleaner for iPhoto and Photos. The detailed information are listed in the below screenshot. The information like price, operating system, supported image format, comparing modes,etc are contained in the screenshot.

Duplicate Cleaner for iPhoto and Photos Operating system Price Supported image format  Comparing modes Pros Cons
Cisdem Duplicate Finder Mac OS X 10.7 Lion and newer $29.99 for lifetime license PNG,JPG, GIF, BMP and more Compare images using advanced MD5 value checksum algorithm Find duplicate images, videos, songs, compressed files; easy to use; 100% accuracy Not free
Photo Sweeper Mac OS X 10.9 or later $9.99 RAW,PDF,DNG, WebP and all other popular image formats Compare images by Bitmap, Histogram, Time Interval, Time and Bitmap, Time and Histogram, or Duplicates Fully compatible with Aperture, iPhoto and Lightroom Not work easily as stated, not intuitive. Can't accurately find the duplicates.
Gemini Mac OS X 10.7 and newer $9.99 JPEG, PNG, and other popular image formats No explanation Simple interface, can find duplicate images, audios, and folders Easy to accidentally delete important files, and run slow when scaning large files, can't accurately find duplicates in iPhoto


From the screenshot above, we can know that Cisdem Duplicate Finder is the best duplicate cleaner for iPhoto and Photos. Photo Sweeper is just a duplicate photo cleaner which can only help you to compare images and videos. If your need is relatively single or you just want to remove duplicate photos or videos, you can try Photo Sweeper. Though Gemini official website claimed that Gemini uses a fast and sophisticated scanning algorithm, but didn’t clearly point out what kind of scanning algorithm. Maybe Gemini locates your duplicates just by file name, date and time dimension or something else. In conclusion, if you want to 100% accurately find and remove duplicate photos in iPhoto or somewhere else on your Mac without any restrictions, Cisdem Duplicate Finder is undoubtedly the best choice for you.

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2 Comments Leave a Reply

  • Cecile

    I've used Cisdem duplicate finder software to detect and remove duplicate files and it's quite user friendly.

    4 years ago REPLY
  • Niki

    I tried all duplicate cleaner for iPhoto and photos recommended in this article. But Cisdem Duplicate Finder worked better than other two duplicate cleaner. It is awesome.

    4 years ago REPLY