How to clean a Mac

Since the launch of macOS Sierra in 2016, the process of cleaning Macs has become simpler. We advise you to update your computer, then follow this tutorial in which we explain how to make room on your Mac and recover disk space.

1. Manage storage space 

Apple developed an storage management functionality to delete your old files and transfer your data on the cloud.

To access it, click on the Apple icon at the top left of your screen and choose About this Mac.

Then, click the Storage tab. 
In the window that appears, it will show the amount of space occupied by MacOS and your applications.

Click Manage right, a menu opens with the options  Store in iCloud, Optimize Storage, Empty Recycle Bin Automatically and Reduce Congestion.

On the left, you will see the amount of data contained in iTunes, your Recycle Bin, in Documents, Mail, Photos, etc. Click on it will get detailed information about all the recorded files.

Click Recommendations to return to the list of options previously given. To understand what each is for, read on.

2. Optimize storage space

Optimize storage allows you to delete movies and TV shows that you have already viewed, as well as attachments of your emails.

These will not be permanently lost because they will be saved automatically on iCloud.

The videos can be downloaded again from iTunes for free.

Just click Optimize, and your Mac does the rest.

3. Empty the Recycle Bin Automatically

Empty Recycle Bin automatically loads as its name implies to systematically erase, after 30 days, all documents that are in the Recycle Bin.

So you have time to recover a file before it is deleted. To use this feature, click Enable.

4. Reduce clutter

Reduce clutter will scan your Mac to locate and erase older large files.

Click Browse Files, then in the left panel select the desired category, then click on the cross.

5. Store in iCloud

The iCloud cloud storage service offers each holder of an Apple account 5 GB of free space.

To increase it, Apple  offers a subscription (0.99 € / month for 50 GB, 2.99 € / month for 200 GB and 9.99 € / month for 2 TB).

To save your data to iCloud, click Store in iCloud, and enter your password.

ICloud Photo Library is used to sync photos from your Mac to all your iOS devices and vice versa. The problem is that your Mac can very quickly become cluttered with these photos …

To prevent this, go to the Photos → Preferences → iCloud tab, and select the iCloud Photo Library and Optimize Mac Storage checkboxes.