Use a Third-Party Cloud Service
If your iCloud Storage is already pretty full and you don’t want to spend more money just to transfer some pictures, you can use a third-party cloud service.
A great option to use is Dropbox. Sure, you won’t have a lot of storage to store all your photos, especially if you only have the free version, but it’ll be enough to send quite a few pictures from your iPhone and to your Mac.
Plus, you can keep the most important pictures in Dropbox and share them with other people by sending them a link. Moreover, you can also use Dropbox to transfer important files too.
Of course, Dropbox isn’t the only one. You can also use other cloud storage services like OneDrive, Google Drive, or any other service you know and trust.