How To Combine Photos Libraries On Mac

10.04.2020
52 Comments

I've had a multi-Mac household pretty much since college, rocking a laptop and desktop in addition to miscellaneous iOS devices throughout the years. Dropbox and iCloud sync made most of the pains of using several Macs disappear, but iPhoto was always a problem. My laptop is tiny! My iPhoto library, not so much.

View users library directory mac. Jan 12, 2020  Launch Terminal, located in /Applications/Utilities. Enter the following command at the Terminal prompt: Press Return. Once the command executes, you can quit Terminal. The Library folder will now be visible in the Finder. Should you ever wish to set the Library folder.

Thankfully, Photos for Mac — paired with iCloud Photo Library's Optimize Storage feature — makes working with and syncing multiple Macs a breeze. Here's how you can do it.

Jan 13, 2020  On your Mac, your photo collection is separated into four main categories: Years, Months, Days, and All Photos. The All Photos tab shows all your photos and videos in chronological order. In Years, Months, and Days, you'll find your photos and videos grouped together based on.

How to use Photos and iCloud Photo Library with multiple Macs

Here's a quick, simple breakdown on setting up your Macs to support Photos and iCloud Photo Library.

Hidden library mac. Since Lion you have to press option ( Alt, ⌥) for the entry to appear.Use Finder's 'Go to folder.'

I recommend starting with your biggest iPhoto library; it'll usually be on your desktop Mac. When you open Photos for the first time, your library should import automatically; if it prompts you to create a new library, your Photos library may be stored in another location on your Mac, and you may need to manually open it.

  1. PowerPhotos lets you organize your Photos libraries on the Mac. You can split a library into smaller ones, merge libraries together, find duplicate photos, and more.
  2. Nov 11, 2015  7 thoughts on “ How to quickly combine multiple Photos libraries in OS X ” Sylvain LE BOUCHER February 10, 2016 at 2:08 pm. Thanks a lot, finally a solution to merge my libraries quite easily. It just change the date of the video Do you have a solution to keep the date inchanged?
  3. Feb 26, 2018  The first category is the Mac user who does not use Photos or even iPhoto. The second group is Mac users who still cling to iPhoto. The third group is Mac users who have and use Photos. The fourth group needs multiple photo libraries. Here are two ways you can get and manage multiple Photos photo libraries on your Mac.
  4. My favorite method to merge two different Photos libraries is as follows: 1. Pick the 'main' library you want to drop the content into. You'll lose information such as your albums and other data besides the photos from the other library.
  5. Jun 21, 2017  Multiple Libraries in Photos and iPhoto. How to combine photos in Photoshop with Layer Masks. How To Move Mac Photos Library To An External HDD.

Once you've imported your biggest library on your Mac, make sure iCloud Photo Library is turned on and syncing. You can do this by following these steps:

  1. Launch Photos on your Mac.
  2. Click Photos in the menu bar.

  3. Select Preferences (or do this quicker by pressing ⌘,).

    Source: iMore

  4. Click on the iCloud tab.

    Source: iMore

  5. Check off the box for iCloud Photos.

    • You can also check off the box for Download Originals to this Mac if you have the space.
    • You can check off Optimize Mac Storage to save space on your Mac by only saving a percentage of images and video locally — the rest will be thumbnails that you can click on to download when you want to.

    Source: iMore

Now, open your other Mac, and launch Photos. If you have an iPhoto library on that secondary Mac, follow the same steps as above — import your library, then turn on iCloud Photo Library. If you have duplicates of the same photo on each computer, iCloud should automatically resolve those conflicts when it syncs, providing you with just one version of your photos when the sync process finishes.

If you don't have an iPhoto library on your secondary Mac, create a new library in Photos and turn on iCloud Photo Library. If you want to save storage space on this secondary Mac, make sure Optimize Mac Storage is selected: This will save a certain percentage of images and video locally to your device, while providing thumbnails of all the others for you to download at your leisure.

After you've set up all your Macs with Photos and the sync process has finished, you're now good to go. From here on out, any time you add photos, they'll sync to every computer you've set up with Photos.

What syncs, what doesn't sync

Photos for Mac syncs a lot more than just your original photos and videos. According to a support document on Apple.com, here's what else you should expect to see sync:

  • All folders and albums
  • Smart Albums
  • Keywords
  • Memories
  • Searchable keywords
  • Key photo selections

There are a few things iCloud Photo Library won't sync, however. Here's Apple's list:

  • Books, cards, calendars, and slideshows
  • Keyword shortcuts
  • Unused keywords
  • Last imported album on the Mac in question
  • Names and faces in the People album

For those not using iCloud Photo Library

If you've chosen not to enable iCloud Photo Library, Apple still offers you free syncing of your last 1000 photos via My Photo Stream, which doesn't count toward your iCloud disk space.

Mac Photo Library Management

This will sync and download images you've imported or taken on other devices, but you won't have the option to optimize your storage or sync your albums.

Octoober 2019: Updated for macOS Catalina.

Serenity Caldwell contributed to an earlier version of this guide.

macOS Catalina

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Photos makes it easy to create and switch between libraries. That’s good when photos need to be kept completely separate. For instance, a real estate agent might want to keep personal photos separate from house photos taken for work. But too much separation is annoying—you have to keep switching between libraries, and it’s easy to import new photos into the wrong one.

If you struggle with multiple Photos libraries, never fear—you can merge them. Unfortunately, the process is slow, can require a lot of disk space, and may result in the loss of some metadata. You have three options: merging through iCloud Photos, using the PowerPhotos utility, and merging by exporting and importing. Each has pros and cons.

Merge through iCloud Photos

Apple’s iCloud Photos service offers the best solution for merging libraries. The trick is that whenever you designate a library as your System Photo Library, Photos automatically uploads all images that aren’t already present, adding them to the photos already in iCloud Photos. It also retains all the metadata surrounding your photos—titles, keywords, albums, facial recognition, projects, and more.

On the downside, using iCloud Photos almost certainly won’t be free unless you have so few photos that the combined library will fit within the free 5 GB of iCloud space Apple gives everyone. Almost everyone will have to pay for additional storage space ($0.99 per month for 50 GB, $2.99 for 200 GB, or $9.99 for 2 TB) for at least the month in which you’re doing the merge. iCloud Photos is a good service, so it’s likely worth paying for anyway.

More problematic is that the iCloud Photos way of merging will be very slow. If you haven’t already started using it, it could take a week or more to upload many thousands of photos. Plus, it will probably download the entire cloud-based collection of photos to each library whose photos you want to merge, so you may need a lot of local disk space too.

If you haven’t previously used iCloud Photos, go to System Preferences > iCloud and click the Options button next to Photo. In the dialog, select iCloud Photos.

Now, starting with the smallest Photos library and working up in size, follow these steps for each library you want to merge:

  1. Double-click the Photos library to open it.
  2. In Photos > Preferences > General, click Use as System Photo Library. (If it’s dimmed out, that library is already set as the System Photo Library.)
  3. Wait for photos to upload. Scroll to the bottom of the Photos view to see the progress. A Pause link will appear there during uploading—click it if you need to keep Photos from overwhelming your Internet connection. Once the photos have all uploaded, go back to Step 1 with your next Photos library.
How To Combine Photos Libraries On Mac

How To Combine Photos Libraries On Mac

When you’re done, the last Photos library becomes the one you’ll keep, and you can delete the others. Needless to say, make sure you have good backups first!

Merge with PowerPhotos

The $30 PowerPhotos from Fat Cat Software provides a variety of extra capabilities when working with Photos. It helps you to create and manage multiple libraries, copy photos between libraries, find duplicates, and—most important for this topic—merge libraries.

Because PowerPhotos is working entirely on your Mac’s drive, it’s fast and it doesn’t require huge amounts of extra disk space. Unfortunately, unlike the iCloud Photos approach, which brings in both originals and any edits to those photos, PowerPhotos can import only your original photos or the versions that you’ve edited, not both. Plus, it can’t merge facial recognition data, smart albums, or print projects.

PowerPhotos provides an actual interface for merging too—choose Library > Merge Libraries to start.

In the window that appears, you have four tasks:

  1. Choose source libraries. You aren’t limited to merging just two libraries; you can pick multiple sources.
  2. Choose the destination library. This is the library you want to receive all the photos. If you want, you can create a new one.
  3. Configure duplicate handling. PowerPhotos can import just one of several copies of duplicate photos, or you can bring in all the duplicates if that’s important.
  4. Choose options. PowerPhotos can merge album contents, create an album from each source library, and create a backup before merging. Most important, though, is the choice of whether to merge your original photos or the edited versions.

Merge by Exporting and Importing

This final option is conceptually simple. You export all the photos from one library and then import them into another. It’s even what Apple recommends. The main thing it has going for it is that it’s free, and it will be faster than the iCloud Photos approach. It could also be useful if you want to copy a subset of photos between libraries, rather than merging all photos.

However, as with PowerPhotos, you have to choose between original and edited photos, and you’ll need a lot of extra disk space. Even worse, you’ll lose even more metadata, including albums, faces, and print projects. And if you export as JPEG, your photos may also suffer a slight quality drop as they’re recompressed.

For those who want to use this approach, Apple provides detailed instructions. In essence, you’ll click Photos in the sidebar to see everything, and then choose Edit > Select All. Then you’ll choose File > Export and either Export X Photos (to get the edited versions of images) or Export Unmodified Original for X Photos (to get the original images). Once everything has exported, you’ll switch libraries in Photos and then drag the folder of exported images back into Photos to import it.

Our nod goes to the iCloud Photos technique, but PowerPhotos is a fine utility for those who aren’t perturbed by its limitations. Of course, don’t start any merging without making backups first, and if you need help, don’t hesitate to call or text us!

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