iCloud can effectively give you up to 2TB of additional storage to supplement your Mac’s drive capacity, particularly useful with 256GB and 512GB Macs. The trick is using the Optimize Mac ...

Click on the iCloud tab at the top of the window as shown below to choose Optimize Mac Storage. For more ways to uncover what’s taking up your space and free up storage on your Mac, check out ...

"When Optimize Storage is turned on, full-resolution photos and videos are stored in iCloud, and, when needed, space-saving copies are stored on your device," Apple noted.

In my iPhone, for instance, Optimize Photos would free up 28.88GB of storage – that’s enough to download another 5000 songs on Spotify, or around 25 90-minute movies on Netflix.

Take advantage of smart recommendations which are provided by Apple to optimize iCloud storage. Accept or reject the recommendations which are based on your storage needs and preferences.

File storage on the Mac is broken down into the following categories: Applications, Documents, GarageBand, iBooks, iCloud Drive, iOS Files, iTunes, Mail, Photos, and Trash.

Once you've upgraded your iPhone to iOS 5, you'll want to set up iCloud, but the default settings will leave you without much storage room to spare. Find out how to maximize your back-up space.

To see where you stand, head to Settings → General → iPhone Storage. If Photos is high up on the list, turning on optimized storage for iCloud Photos can help out.

The post was titled "how crazy good Optimize iPhone Storage works". And the user wrote: "About 44 GB of photos and videos (~15,000 items) in iCloud are now only taking up 8 MB (!!!) on my device.