Apple Photos - Easier way to add the same locations, multiple times

To create the groups, create one album for each place. Drag the photos for each place to the correct album in the sidebar.

If you want to use keyboard shortcuts, assign a keyword with the name of the location, for example "My Home", "My Work", etc. Any keyword you add to the Quick Group in the Keyword Manager will have a keyword shortcut. As long as you keep the Keyword Manager open (with ⌘K), you need just to type a letter or digit to assign the keyword all selected photos. Then you can easily select all photos with the same keyword together by using the "Showing Only" filter in the upper right corner of the Photos window. Photos 5 on Catalina allows you to filter and view by the keywords from your Quick Group of Keywords.

This way you can select all at once with ⌘A, open the Info ⌘i, and enter the location name or GPS coordinates. If you want to use an Apple Script to assign the location more accurately than typing into the Info will do, select all photos at once and use ⌘N to create a new album from the selected photos. To run an Apple Script, you have to select the photos in a top level album, not in a filtered view or a smart album.

On problem you still will be having is that the adding of locations in Photos 5 on Catalina is horribly imprecise. It has been broken since macOS 10.15.2 came out and has not yet been fixed in macOS 11 Big Sur either. It is fine, as long as you can enter a complete address - any named place in a city. But off the beaten tracsk, somewhere where the named places are sparse, outside the big cities, it does no longer help to add the GPS coordinates precisely. Photos will assign the location of the closest named place from Apple's location database, which can be thousands of miles away. Then assigning the place with a script is the only way. Or using an external editor like HoudahGeo.

As long as you are only needing to assign locations to photos take-in densely populated places and not pictures from long hiking trips or sailing trips, it will be fine.

Hello,

I wrote myself a couple of AppleScript apps for Photos.app.

One of them does exactly what is wanted here: it copies a location from one to any number of marked photos. So similar to the script linked here, but with a different setup. You first select a photo to copy the location info from, and then select the photos to receive it.

Another one goes back to the "correcting" of coordinates described by léonie. Here you can enter coordinates and -without them being corrected- add them to any number of marked photos.

The apps were not intended for editing a really large number of photos, but they can do that too. However, the Photos.app will then certainly use a lot of CPU...

Additionally, since the apps also write the location information into the originals of the images, there are a few little things to keep in mind. In most cases the apps can determine the used Photos Library itself. In a few cases it has to be selected manually (unless you use only one media library anyway). This is necessary because the path to the images is read from the Photos Library's database.

It's best to read the ReadMe before use :)

Maybe these will help you:

PhotosSetCoordinates.app

PhotosGPSTransfer.app

I hope they work on your Mac too

Greetings

There is a script that allows you to copy the location from one image to a group of others. See:

https://discussions.apple.com/docs/DOC-250000316