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Merge Multiple Photo Libraries Mac Os Mojave

31.05.2020
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1) Tick the box next to “Copy items to the Photos library” in Photos → Preferences → General. To see what’s inside, right-click the file and choose the option Show Package Contents in a contextual menu.In addition to storing your unmodified original images, the Photos library saves their device-optimized versions, copies of edited images, thumbnails, previews, caches and other related items. Here’s what’s inside my photo library bundle:WARNING: To avoid accidentally deleting or corrupting a Photos library, do not alter the contents of a library in the Finder. Going forward, every image added to Photos will be copied to your library.2) In Photos, select all photos ( Edit → Select All or Command (⌘)-A) and then choose File → Consolidate. Drive During this process, Photos will add and save a copy of any referenced file to your library. How to move your Photos library to a separate driveBefore moving your photo library to a separate drive, you must first ensure that the image stored outside your library are consolidated.

Apr 07, 2017  #4 There is something of a merger technique, using iCloud Photo Library. One can add the first library to iCloud Photo Library, then turn off the library feature on the Mac. Then, you can open the second library in Photos, and add it to iCloud. Afterwards, one could again turn off iCloud Photo Library. Export the current Photos library as files. Select the All Photos album, then Edit Select All, then File Export. Pick Export Unmodified Original if you’ve made no changes to photos in iPhoto; Export Photos if you have. Then import those 6,000 photos into the master Photos library.

  1. Merge Multiple Photo Libraries Mac Os Mojave 10 14 4
  2. Merge Multiple Photo Libraries Mac Os Mojave Download
  3. Free Photo Libraries
  4. Merge Multiple Photo Libraries Mac Os Mojave Download
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Sep 03, 2015 With multiple libraries on your Mac, you can switch between them very easily using two methods. The first is using the same library manager, so simply quit and relaunch Photos with the Option key held, and you can then select your library. Jun 21, 2017 Multiple Libraries in Photos and iPhoto. Skip navigation. How To Set Up And Manage Multiple iPhoto Libraries - iPhoto. How To Move Mac Photos Library To An External HDD macOS Mojave. Nov 01, 2017 I'd like to merge two macOS Photos libraries into one, with the ability to weed out duplicates during the process. I just sold an old Mac and moved its Photos library onto another Mac with its own existing Photos library.

Oct 25, 2019  Launch Photos on your Mac. Click on Photos in the sidebar, under the Library section. Pick out the photos you want to add to an album, either new or existing. Hold down the command key on your Mac and click to select multiple photos.

When merging two photo libraries we usually want a lossless merge:

  1. The original photos and the edited versions should be merged into the merged library as master-version pairs, so it will be possible to revert edited photos to the original.
  2. The library structure with albums, smart albums should be preserved in the merged library.
  3. All metadata, including the faces labels should be migrated.
  4. The products (books, cards, calendars, slideshows) should be migrated.


Written for Photos 4.0 on macOS 10.14.4 or older:

(this applies to Photos 5.0 on Catalina as well)

There is currently no completely lossless way to merge Photos Libraries, because Photos does not support importing one Photos Library into another library. All work-around methods are compromises. There is no lossless merging of Photos Libraries other than iCloud Photo Library, and even the merging in iCloud will not include the print products. Photos 2.0 or older will not sync the faces with iCloud.


If you are planning to migrate your photo libraries from Aperture or iPhoto to Photos and own Aperture 3.6, merge your libraries in Aperture before the migration while you still can use Aperture as described here: Aperture 3.3: How to use Aperture to merge iPhoto libraries - Apple Support

Make backup copies of the libraries before you try that.


The options in Photos are:

  • Merge the libraries in iCloud by uploading them to the same iCloud Photo Library: Merging in iCloud is the only way to preserve the master-version pairs, so you can revert edited photos to the original versions. Your albums and folders will migrate, keywords, titles, and other metadata. All edited images will be paired with their originals, so you can undo the edits and revert to the original. The searchable faces names will upload (only on Photos 1.5 or older, not on Photos 2.0), but not the faces thumbnails and albums. Photos will scan for duplicate original files while merging and resolve conflicts between duplicate originals. It is the best way to migrate libraries you invested much work into, but uploading large libraries to iCloud requires a paid subscription for more storage than the free 5GB - for at least a month, and it is slow. My library with 40000 photos took a full week to upload.
    • To merge in iCloud enable the smaller of the two libraries as your iCloud Photo Library.
    • Wait for all photos to upload; that can take a very long time, a week ore more, depending on the size of the library. Photos will merge the the library into the library that is already in iCloud.
    • Now enable the larger library as your iCloud Photo Library. This library will be merged into the library in iCloud too, creating a merged library in iCloud. The merged library will sync back to your larger Photos Library. The merge will not include the Faces albums and projects from the first library you uploaded. That is why I recommend to start with the smaller library. The download will be like to a different Mac, see: Use Photos and iCloud Photo Library on multiple Mac computers - Apple Support
    • To sync the faces names with iCloud Photo Library, I apply keywords with the names of the persons to all photos in a people album. Photos 1 and 2 cannot sync the named faces, but Photos 3 and 4 can sync them.


  • Merge the libraries by exporting the photos (edited versions and originals) from one library and reimporting them into the other library. (Combine libraries in Photos - Apple Support) This is the most tedious way and only feasible for very small libraries. You would have to export the edited versions and the originals separately and they would no longer be paired. On Yosemite or El Capitan - even if you export the originals with XMP sidecar files to preserve the IPTC metadata, the metadata from the sidecar file will not be applied to the originals when reimporting. Your metadata will be gone, unless you export the edited versions as JPEGS. So there is no help for it but to export both, the originals and the edited versions, and to deal with the duplicates. Photos 2.0 on Sierra can read the sidecar files on import - so exporting with XMP files will transfer the metadata to the new library.

But you will have to recreate the albums and smart albums as well.


Merge Multiple Photo Libraries Mac Os Mojave 10 14 4

  • Merge the libraries with PowerPhotos 1.62 or newer: PowerPhotos is a tool to manage Photos Libraries. You can easily browse libraries in turn and move photos and videos between libraries (not bursts). Merging with PowerPhotos is fast (https://www.fatcatsoftware.com/powerphotos/. It will migrate the metadata (but not the faces) and the albums. Fully supported: photos and videos, keeping keywords, descriptions, titles, dates, favorites, locations, bursts, and Live Photos intact; albums, folders, and moments. On older versions of Photos (up to Photos 4 on Mojave) you have to decide, if you want to use the originals or the edited versions. So you will either lose the editing work or the high quality originals or create redundancy by merging twice in two passes, once to transfer the originals, and then the edited versions. You will have to add a pass to remove duplicates afterward. See chapter six in the PowerPhotos manual: : https://www.fatcatsoftware.com/powerphotos/Help/merging%20libraries.html, also: https://www.fatcatsoftware.com/powerphotos/Help/copying%20limitations.html. For older versions of PowerPhotos more limitations apply.
  • Another option would by to keep both libraries separate and use PowerPhotos to browse the libraries and to transfer selected albums as you go.

Merge Multiple Photo Libraries Mac Os Mojave Download

On Mojave, iCloud Photo Library would be the best option. Merging with PowerPhotos the second best. If you are tagging faces in Photos or are using iCloud Photos anyway, I would go for the iCloud merge or upgrade to Catalina, see below.


Update for PowerPhotosVersion: 1.7.7 on Catalina macOS10.15.2

PowerPhotos now supports a nearly lossless merging of libraries and exporting partial libraries, including the locations, videos, Live Photos. There are still a few limitation for smart albums and named faces. But PowerPhotos now lets us move photos between libraries as master-version pair with reversible edits. Live Photos are also supported. See the updated feature list:

And the limitations when merging into an iCloud Photos Library:


Update for Photos 3.0 on macOS 10.13 and Photos 4.0 on macOS 10.14 Mojave:

Photos 3.0 and Photos 4.0 will also sync the recognized faces when you merge two Photos libraries in iCloud. Projects do still not sync to iCloud.


Old deprecated version: Notes on Merging Photos Libraries - Apple Community

Free Photo Libraries

As an OS X user you likely have at least some of your photos stored in Apple’s provided Photos application, and by doing so, you can use them with iCloud services, and in applications that interface with OS X’s media sharing services. However, there might be times where you want to keep some photos separate from others, and manage them in more private ways than having them accessible by other applications and services.

Creating a new library

Creating a new library for your various projects is relatively simple. First quit Photos, then launch it while holding the Option key, and you should see the library manager window appear. In here, you should see your current library listed, but also have the option to create a new library. Once created, you can then drag and drop or otherwise import the photos you want, and this new library will be the default one used when Photos launches.

By creating multiple libraries in this manner, you can keep projects separate and also spread out where you have your photos stored your library’s location, including storing it on a secondary partition, an external drive, or on a network attached storage (NAS) device.

Switching libraries

With multiple libraries on your Mac, you can switch between them very easily using two methods. The first is using the same library manager, so simply quit and relaunch Photos with the Option key held, and you can then select your library. However, an even easier approach is to simply open any of your photo libraries directly in the Finder, and it will open in Photos and become the default library used. With this approach, simply place the libraries or aliases to them in a convenient location, and then open them directly, instead of opening the Photos application itself.

The library chooser gives you a list of libraries that are in default locations on your Mac. You can use this panel to create new libraries, or choose those in non-standard locations like network storage drives.

The real issue with multiple libraries is not which library is the default opened with Photos, but which is used as your System Library, that is, the one that third-party services like iCloud and other applications will reference when they are instructed to access your photo library. To change this, you need to go to the Photos preferences and click the button to use the current library as the System Library.

Merge Multiple Photo Libraries Mac Os Mojave Download

The caveat here is that in order to use a library with iCloud and other services, it must be stored on a volume that is formatted to Apple’s native HFS+ (Mac OS Extended) format. You can check this on any locally-attached drive by selecting it in the Finder and pressing Command-i to reveal the information window. Then expand the General section, where you should see its format listed.