GeoTag is a free OS X single window application that allows you to update image metadata with geolocation tags by selecting one or more images then panning and zooming within a a map to the place the image was recorded. Clicking on the map will add the location to the selected photos. Clicking on a new location will change the geolocation for the selected photos. Zoom in on the map and fine tune the location with a click. The built in ExifTool utility is used to write location data to the images when you save your changes. ExifTool only modifies image metadata -- your image pixels are not touched.
See http://exiftool.org for information about ExifTool. ExifTool is built-in to GeoTag.
GeoTag 5.2+ requires macOS Sonoma or later. Use GeoTag 5.1 if running on macOS Ventura. Those running earlier versions of macOS can use GeoTag version 4.15.
NOTE:
There is a map pin location issue when running on early versions of macOS Sonoma. If you see a pin placed above the point you clicked/tapped you are seeing this bug. Apple fixed the issue in version 14.4 (or perhaps it was 14.4.1). It is not a problem in the versions of Sonoma or in Sequoia.
See https://www.snafu.org/GeoTag/GeoTag5Help/ for more information.
Run Program. Use the Open command from the menu or ⌘O to select files to modify. You can also drag files from the finder into the table on the left side of the application window. Or you may select images from your Photos Library. File names shown in a light grey color are not recognized as valid image files or are disabled for other reasons. Such files can not be modified. Dragging or opening a folder will add all the files in the folder and any subfolders.
Select one or more images. When selecting multiple images one of the images is considered the "most selected". The name of the most selected image is shown in yellow using a bolder font. The thumbnail of the most selected image is displayed in the image well (upper right portion of the window). Its location (if any) is marked on the map.
Click on the map to set or change the location of all selected images. Existing location can be changed by clicking on the desired location. Hitting the delete key will remove location information from all selected images. You can Undo/Redo image location changes.
Double click the map to zoom in. Option-double click to zoom out. Or use pinch gestures to zoom in and out if using a touch pad.
Five map styles --- Standard, Imagery, Hybrid, Standard with traffic, and Hybrid with traffic --- are supported. Right click on the map to select the desired map style. If you find yourself working in a specific area of a map you can save the location and zoom level by right clicking on the map and selecting Save map location. When GeoTag is launched the map will load to the last saved location using the last map style selected.
You may cut or copy location information from a single image and then paste that information into one or more images. If you make an error you can undo/redo your changes. You can undo all changes to all images by selecting "Discard changes" from the "File" menu. All Undo/Redo information is cleared once changes are discarded or saved.
The original versions of images that have been updated are saved are in a backup folder. The backup folder may be changed using GeoTag Settings. The first time GeoTag is run it will prompt you to select a backup folder. Images updates can not be saved until a backup folder is selected or backups are disabled (not recommended).
Cut, Copy, Paste, Delete, and Clear Image List can be accessed from a pop up menu by right clicking on an entry in the list.
Send all comments, bugs, requests, etc. to marc@snafu.org