Combine Two Photo Libraries Mac



MacMost forum question: How Do I Merge Photo Libraries? Over time I seem to have generated a few photo libraries, with much duplication, I think. Is there a simple way of merging them so that there is only one library that both iPhoto and Apple Photos can use?.

Your Photos library holds all your photos, albums, slideshows, and print projects. If your library is large, and you want to free up storage space on your Mac, turn on iCloud Photo Library and use Optimize Mac Storage, or move your library to an external drive.

Combine Two Photo Libraries Machine

Before you start, be sure to back up your library.

Prepare your drive

  1. Sep 09, 2017  Many people have music in two iTunes libraries, on two different computers, and eventually decide they want to combine or merge those libraries. Here's how to do it. First, some background. ITunes stores your music and other media, and maintains several files that contain information about this content. They're found in /Music/iTunes/ ( is a.
  2. Mar 03, 2019  This user tip has been moved to: Notes on Merging Photos Libraries, 2019 Version The older version can no longer be edited without destroying the formatting.-When merging two photo libraries we usually want a lossless merge: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.
  3. In Lightroom, a catalog is a database that tracks the location of your photos and information about them. When you edit your photos and add metadata or keywords to them in Lightroom, all of these changes are stored in the catalog. The photo files themselves are not touched. There is fierce debate about on how to best approach catalogs in Lightroom.

You can store your library on an external storage device, such as a USB or Thunderbolt drive formatted as APFS or Mac OS Extended (Journaled).1 Find out how to check the format of your external storage device.

To prevent data loss, Apple doesn't recommend storing photo libraries on external storage devices like SD cards and USB flash drives, or drives that are shared on a network.

Move your Photos library to an external storage device

  1. Quit Photos.
  2. In the Finder, go to the external drive where you want to store your library.
  3. In another Finder window, find your library. The default location is Users > [username] > Pictures, and it's named Photos Library.
  4. Drag your library to its new location on the external drive. If you see an error, select your external drive's icon in the Finder, then choose File > Get Info. If the information under Sharing & Permissions isn't visible, click , then make sure the 'Ignore ownership on this volume' checkbox is selected. If it's not selected, click to unlock it, enter an administrator name and password, then select the checkbox.2

  5. After the move is finished, double-click Photos Library in its new location to open it.
  6. If you use iCloud Photo Library, designate this library as the System Photo Library.

Delete original library to save space

After you open your library from its new location and make sure that it works as expected, you can delete the library from its original location.

In a Finder window, go back to your Pictures folder (or whichever folder you copied your library from) and move Photos Library to the trash. Then choose Finder > Empty Trash to delete the library and reclaim disk space.

Open another Photos library

If you have multiple libraries, here's how to open a different one:

  1. Quit Photos.
  2. Press and hold the Option key while you open Photos.
  3. Select the library that you want to open, then click Choose Library.

Photos uses this library until you open a different one.

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Combine Two Photo Libraries Machines

Merge two photo libraries mac

If you have a permissions issue with your library, you might be able to resolve the issue by using the Photos library repair tool.

1. You can't move your library to a disk that's used for Time Machine backups.

2. If the volume isn't formatted APFS or Mac OS Extended (Journaled), or has been used for Time Machine backups but hasn't been erased, this checkbox will either not be present, or won't be selectable after unlocking. Erase and reformat the drive for this option to be available.

To combine Photos libraries, open the source library and export the photos and videos that you want to keep. Then open the destination library (the one that you want to use as your main library) and import the photos and videos.

Choose a photo library

Here's how to open one of the multiple photo libraries that you might have on your Mac or on a connected external drive:

  1. Press and hold the Option key as you open the Photos app.
  2. Select the library that you want to open, then click Choose Library.

Photos uses this library until you open a different one using the same steps.

Combine Two Photos Libraries Mac

Export photos and videos from the source library

Open the source library, then decide whether you want to export your files as unmodified originals or edited versions:

Edited versions retain their edits when you import them. The advantage is that you don't have to recreate any edits; however, these files become the destination library's originals. This means that you can't revert to their earliest pre-import version.

Unmodified originals don't show any edits that you made when they were in the source library. This gives you flexibility for later editing, but recreating your edits might take substantial work.

How to export edited versions

  1. In the Photos app, select the photos and videos that you want to export. To select multiple items, press and hold the Command key while you click. To select a group of items in order, click the first one, then press and hold the Shift key while you click the last one. This selects all of the items between the two that you clicked.
  2. Choose File > Export > Export [number].
  3. An export dialog appears.
    • In the Photos section, set Photo Kind to JPEG, TIFF, or PNG. JPEG recompresses your photos, which may result in smaller file sizes. TIFF and PNG files are higher fidelity and may result in larger file sizes.
    • In the Videos section, choose a Movie Quality setting. This section appears only if your selected items include videos.
    • In the Info section, select the checkboxes if you want to preserve metadata and location data in the exported files.
    • In the File Naming section, set File Name to Use File Name and set Subfolder Format to either Moment Name or None. Moment Name creates a subfolder for each Moment that's represented in your selected items. This is useful if you'd like to create an Album in the destination library for each Moment. The None option exports all of the files directly into the destination folder.
  4. Click Export. A Finder dialog appears.
  5. Navigate to the location where you want to save the files, such as the Desktop or an external drive. Click New Folder if you create a new folder for your exported items.
  6. Click Export.

How to export unmodified originals

  1. In the Photos app, then select the photos and videos that you want to export. To select multiple items, press and hold the Command key while you click. To select a group of items in order, click the first one, then press and hold the Shift key while you click the last one. This selects all of the items between the two that you clicked.
  2. Choose File > Export > Export Unmodified Original.
  3. An export dialog appears.
    • If your photos include IPTC metadata (such as titles or keywords) that you want to keep, select the Export IPTC as XMP checkbox.
    • Leave the File Name setting on Use File Name.
    • Next to Subfolder Format, choose Moment Name or None. Moment Name creates a subfolder for each Moment that's represented in your selected items. This is useful if you'd like to create an Album in the destination library for each Moment. The None option exports all of the files directly into the destination folder.
  4. Click Export. A Finder dialog appears.
  5. Navigate to the location where you want to save the files, such as the Desktop or an external drive. Click New Folder if you create a new folder for your exported items.
  6. Click Export Originals.

How to import photos and videos into the destination library

Open the destination library, then drag the folder that contains your exported items into the main area that shows your other photos and videos. When a green plus sign appears on your pointer, you can release the folder.

The photos in the folder are sorted into Moments based on their creation dates and locations. The videos are sorted based on the date you exported them from the source library.

Merge Photos Libraries Mac Os

If you created subfolders when you exported the items and you want to create an Album for each subfolder, follow these steps:

  1. In the Finder, open a subfolder.
  2. Select all of the photos and videos within the subfolder.
  3. Drag the items onto My Albums in the Photos sidebar.
  4. Name the Album in the highlighted text box that appears in the sidebar.
  5. Repeat for each subfolder.

Save space by deleting the source library

If you're sure that you've exported all of the photos and videos that you want to keep from the source library, you can delete it to save disk space on your Mac.

First, open the Finder and find the source library that you want to delete. By default, photo libraries are stored in your Pictures folder. If you can't find the library, follow the steps to choose a library; the path to the selected library's location appears in the Choose Library window.

Combine Two Photo Libraries Macbook

Next, move the source library to the Trash. Then choose Finder > Empty Trash to permanently delete the files.

Merge Two Photo Libraries Mac

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