Removing Duplicate Photos on macOS
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Micah Sargent
Coming up on Hands On Tech, let's take a look at how we can deduplicate photos on macOS. Stay tuned. This is Twit. Hello and welcome to Hands On Tech. This is the show where you write in with your tech questions and I, Micah Sargent, answer them. Our question this week comes in from Ryan, who needs some help with with de duping photos on macOS. Ryan writes, I'm in the process of cleaning up my Mac photo library. Photos has found almost 15,000 duplicate photos. It takes three clicks per photo to merge them. That will require a lot of clicks. I'm wondering if you could recommend an automated deduping app. I see there are a lot out there but would prefer to get a recommendation from someone who has actually used the app before. I don't mind paying for a great app, but free is a very good price. I'm sure you have probably covered this topic before. If so, could you point me to the show or episode? Thank you Ryan. We've mentioned different options over the course of time, but I think the best way to answer your question is right here on this show. Definitely that manual process would be grueling of going through and trying to dedupe all of those photos. There are some options out there and I want to start with some paid options. The first one I want to mention is an app called Photo Sweeper x photosweeper works directly with your photos library so it can sort of pull that in and look for duplicate photos. And it of course has some smart detection features built in. So what it'll do on top of just looking at oh, this has the same file name. It's going to look at the photos and see the metadata and also compare the photos themselves to look for duplicates. You can preview everything before deleting and there are loads of different matching criteria that you can set up so you can decide, okay, no, this is not what I want when it comes to trying to get the duplicates or yes, I want to do this when I'm trying to get the duplicates and it does have some built in safety features to make sure that you don't delete photos that you don't intend to. Photo Sweeper is available in the Mac app store for 14.99 so you can pick it up from there and that would help you with being able to make those changes. Now there's another option and it's the one that we have talked a lot about on different shows and that is because the folks at MacPaw make great software. It's called Gemini 2. And it is called the Gemini 2 the Duplicate Finder. It's available for $20. It's actually available to download for free. You give it a go and then it's $20 a year. But with Gemini, it goes past just being a photo duplicate finder. It is the all in one duplicate finder. So it will find files, it will find all sorts of stuff that you may have duplicates of. And it does a really good job of the non obvious drop duplicate detection. So if you have photos that are very similar, perhaps you took, you know, six photos at a time and five of them are blurry, one of them is good, it can help you find those as well. And you can basically say, I trust you to do your job and then it will get rid of those duplicates without you having to go through and click, click, click, click, click, click, click. It has some visual comparison tools built in so that you can do that as well. And, and again, it's been one that I've used for so long as a dedupe system, again across my entire Mac. Not just photos, but also files. Sometimes I'll throw it at my network attached storage and find times where I just had dragged something over two or three times not realizing that I've got multiple copies of it. It's fantastic. It also has a feature where you can start looking for duplicates and then if you need to pause for whatever reason, it can kind of pick back up where it left off as opposed to needing to completely restart, which is great. And for you, with 15,000 duplicates in your photo library, I have to imagine that you've got quite the system, or rather quite the large file size in place. So being able to look through that photo library and if you need to, you know, kind of get back some of your performance momentarily, being able to do that is great. Now there's also a free and open source tool that you can use. I've made use of it a couple of times. I have also suggested it to people who were a little bit price sensitive and it works well. It's a little bit more technical, so you're going to kind of need to read through the instructions and make sure that you understand what you're doing with it. But it's very, very powerful. Dupe Guru is the name of the application. Again, free and open source. It can, it can work with the photos library, it can work with other photo library. Basically you can decide what you want to use it with. And it has a bunch of different matching algorithms built in to help you find what you are looking for, specifically when you're looking for those duplicates. So while the other two programs cost, you may get to your final destination or your final desire for faster because you aren't needing to do the, the, the process of understanding how to use the application. It's kind of, it's very easy to follow through the process and get done what you need to get done. Whereas with Dupe Guru you are going to, you probably have a little bit of a learning curve. So it kind of depends on what you feel your time is worth in those situations. But perhaps you start with Dupe Guru and then if you decide to take the plunge, go for photo sweeper or Gemini 2. I think they're both great options. And then of course Dupguru as the free option. Also great. It's just all depending on what your preferences are and what you feel you're able to get out of it when it comes to duplicate finding. Because if you're just trying to find literal duplicates of a file, in this case a photo, then some of these tools are going to make that happen a lot easier. But if you're also kind of trying to clear out photos that you don't need anymore because you took six photos in a row, then that's where you're going to need a more powerful tool rather than the free one. Now, regardless of which app you choose, I just want to remind you, dear Ryan, please, please do a complete backup of your photos library first. If you're using Time Machine, that's a great way to start. But also clone that to an external drive if you can. 15,000 photos or more, and probably more if those are just the duplicates, then you really, really, really, really want to make sure that you've got all of those photos backed up, all those memories backed up somewhere else before you throw a program at it that's going to start deleting everything, you really want to protect that. So that's my suggestion for you Ryan, and thank you for your question. This is something that, you know, a lot of people deal with trying to figure out how to cut down on their photos library. I want to mention for people who aren't familiar with that, as Ryan said, there is the built in duplication finding tool where you simply ask photos to look for duplicates in your photos library. Now as Ryan pointed out, it can be kind of bothersome when you are trying to find those duplicates or rather trying to select those duplicates and have them properly appear for deletion and so be mindful of that as you're going through that. Maybe for you the tool is not the built in duplicate finder, but instead is something more powerful, like one of these tools to access duplicates in your Photos library. You launch the Photos app and underneath the Collections option there's an album essentially called Utilities. And within Utilities is an option called Duplicates. And that will allow you to do those duplicates. Now you can always, if you want to, Ryan, go into that Duplicates section, hold down command and press A to select all of the duplicates and then simply choose to merge them, which will let you merge all of the items into one, not all of the items into one, but each of the duplicate. Each of the instances of the duplicates being found will be merged into one. Interesting that I have precisely 666 duplicates. I don't know what that means, but that is the number of duplicates I have in my Photos library. Spooky. But yes you can. If you feel like you can trust the system to do the to do the duplicate finding for you, then this is a way to cut down on those duplicates by selecting them all at once. Should I hit merge? Oh, merge. 318 exact copies only. We did it. And we'll see what the. Oh, it's going to take 94 hours to merge all of my duplicates. I'm left with 348 that are nearly exact copies, but some of them are smaller size. So Ryan, there's the answer to your question. Of course, as always, I recommend write in with what you end up doing. We love to hear that if you decided to go with Photo Sweeper and you think it's fantastic and it worked perfectly for you. Always love to hear that. Hey, I would love, love, love if you joined us in a special place. The special place is Club TWiT. 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Podcast Summary: Hands-On Tech 228: De-Duping Photos on macOS
Release Date: August 10, 2025
Host: Micah Sargent
Podcast: All TWiT.tv Shows (Audio)
In this episode of Hands-On Tech, Micah Sargent addresses a common issue faced by many Mac users: managing and removing duplicate photos from the macOS Photos library. The episode provides a comprehensive overview of various tools and strategies to efficiently deduplicate photos, catering to both paid and free solutions.
The episode begins with a listener question from Ryan, who is overwhelmed by nearly 15,000 duplicate photos in his macOS Photos library. Ryan expresses frustration with the manual process of merging duplicates, which requires three clicks per photo, leading him to seek an automated solution.
Quote:
"Ryan writes, 'I'm in the process of cleaning up my Mac photo library. Photos has found almost 15,000 duplicate photos. It takes three clicks per photo to merge them. That will require a lot of clicks. I'm wondering if you could recommend an automated deduping app...'"
— Micah Sargent [00:00]
Micah first explores paid applications that offer robust features for deduplicating photos on macOS.
Functionality:
PhotoSweeper integrates directly with the Photos library, utilizing smart detection features beyond mere file name matching. It analyzes metadata and visual content to identify duplicates accurately.
Features:
Pricing:
Available on the Mac App Store for $14.99.
Quote:
"Photo Sweeper works directly with your photos library so it can sort of pull that in and look for duplicate photos... it does have some built-in safety features to make sure that you don't delete photos that you don't intend to."
— Micah Sargent [Detailed Discussion]
Functionality:
Gemini 2 is branded as the "Duplicate Finder," extending its capabilities beyond photos to encompass all file types on a Mac.
Features:
Pricing:
Quote:
"Gemini, it goes past just being a photo duplicate finder. It is the all in one duplicate finder... it can help you find those as well."
— Micah Sargent [Detailed Discussion]
Personal Experience: Micah shares his long-term use of Gemini 2 across his Mac and network-attached storage, praising its effectiveness in identifying and removing duplicate files beyond just photos.
For users seeking a cost-free solution, Micah introduces DupeGuru, an open-source application.
Functionality:
DupeGuru offers versatile duplicate detection with multiple matching algorithms, making it suitable for various file types, including photos.
Features:
Considerations:
Quote:
"Dupe Guru is a little bit more technical, so you're going to kind of need to read through the instructions and make sure that you understand what you're doing with it."
— Micah Sargent [Detailed Discussion]
Recommendation: Micah suggests starting with DupeGuru for those comfortable with a more hands-on approach. If users find it challenging, transitioning to PhotoSweeper or Gemini 2 might be more efficient.
Beyond third-party applications, macOS Photos offers a built-in duplicate detection tool, though with limitations.
Accessing the Tool:
Functionality:
Process:
Personal Anecdote:
Micah shares his experience of merging 666 duplicates, humorously noting the spooky nature of the number, and successfully reducing his duplicates to 348 with varying file sizes.
Quote:
"Should I hit merge? Oh, merge. 318 exact copies only. We did it."
— Micah Sargent [Live Demonstration]
Limitations:
While effective for exact duplicates, the built-in tool may be time-consuming for large libraries and doesn't offer the advanced features of third-party apps for detecting similar but not identical photos.
Micah emphasizes the importance of backing up the photo library before undertaking any deduplication process to prevent accidental loss of cherished memories.
Quote:
"Please, please do a complete backup of your photos library first. If you're using Time Machine, that's a great way to start."
— Micah Sargent [Final Advice]
Final Advice:
Choose the deduplication tool that aligns with your technical comfort level and specific needs. For simple duplicate removal, the built-in Photos tool may suffice. For more comprehensive and automated solutions, consider investing in PhotoSweeper or Gemini 2. DupeGuru remains a viable option for those seeking a free alternative and are willing to navigate its technical intricacies.
Micah concludes by reaffirming the value of addressed solutions and encourages listeners to share their experiences with the recommended tools. He invites feedback and highlights the widespread issue of photo library clutter, assuring listeners that effective solutions are available.
Quote:
"This is something that, you know, a lot of people deal with trying to figure out how to cut down on their photos library."
— Micah Sargent [Closing Remarks]
Note: This summary excludes promotional segments related to Club TWiT and other advertisements, focusing solely on the content pertinent to deduplicating photos on macOS as discussed in the episode.