How to remove metadata from image files using AppleScript?
To make an ApplesScript droplet app, save the following example AppleScript code in Script Editor as an application:

on open droppedItems
    repeat with droppedItem in droppedItems
        do shell script "/usr/local/bin/exiftool -all= " &amp; ¬
            quoted form of POSIX path of droppedItem
    end repeat
end open


Now drag and drop the target file(s) onto the app's icon to process the file(s).



Note: The example AppleScript code is just that and does not contain any error handling as may be appropriate. The onus is upon the user to add any error handling as may be appropriate, needed or wanted. Have a look at the try statement and error statement in the AppleScript Language Guide. See also, Working with Errors.