Date Published:
How to clean Mac: Caches & Temporary files. First of all, make an optional backup of your computer before performing any manual procedures, so in case something goes out of hand, you’ll always have a plan B. Don’t pass on making a backup because you never know what can go wrong.
Caches and temporary files combine multiple data, from cache and history of the web browser and message data to application-specific cache files and incomplete downloads. Usually, Mac OS doesn’t suffer from cache overload so do the apps you might use, but sometimes it can create a change to the performance if you make a little cleanup.
In most cases, Mac holders tend to clear caches and temporary files if they need additional space since these files can seize a generous amount of storage, or if an application doesn’t work correctly. Whatever the reason for clearing cache and temporary files you have, you should decide whether it’s reasonable or not. There’s nothing wrong with cleaning away your browser files, but will it help to solve your problem?
A number of app cleaners claim that such cleanup will do magic to your Mac. Don’t be fooled! There’s nothing in it which might do miracles. However, a reliable application can ease this process and make it quick & simple. For this reason, we use MacFly Pro since it’s not only useful for clearing caches and temporary files but also for a myriad of other things. Some of them include: safe app uninstallation, reducing memory storage, managing large documents and finding duplicate files. It takes only several clicks and none of your effort to swipe away caches and temporary files with this app. But if you are bothered to download the app – check the text below for a manual solution.
How to clean Mac: Caches & Temporary files
First of all, make an optional backup of your computer before performing any manual procedures, so in case something goes out of hand, you’ll always have a plan B. Don’t pass on making a backup because you never know what can go wrong. The files can be easily restored, and it’s not much of a big deal, but it’s good to have a backup folder on the desktop. After you do all of that, proceed to these steps:
- Shut down any actively running apps.
- In the Mac Finder select “Go” menu. Or use a shortcut: Shift key (for Sierra) or Option/ Alt (Earlier versions.)
- Select “Library” option from this
- There, locate and click on the “Caches” folder.
- Pick the files you want to clear by hand, or select them all at once and place those files into the Trash.
- Afterwards, empty everything from the Trash.
If you want to clear the caches of a particular web browser on your Mac, it is better to do it directly in Safari, Chrome or any other web browser that you use.
How to Delete System Data on Mac
If you thought that those are the only files your computer collects – you’re wrong. Your computer and system applications might keep other types of files that you would want to delete. As we know, caches can be linked to browsers, accounts, and Mac OS. And Mac OS cache is probably the easiest to get rid of. You only need to restart your Mac. Sounds simple but it works! And no walkthrough needed!
To clear other data on your computer, just go to the Mac menu and choose “Restart,” when you reboot the system, Mac OS will delete those files and the /private/var/ folders. This process happens when you shut down the system, and Mac does it automatically without harming other data. But what are the files the Mac OS system collects? These include temp files, sleep images, swap space, virtual memory, computer’s software updates, caches of Mac App Store, and other multiple files.
Now you know how to clean Mac and files that your computer stores. Do this manually, or use an app method if you are in a hurry. But whichever option you choose make sure to stick to the steps we’ve provided. Also, do a quick backup of the files to be certain that you have a copy in case you mess anything up, but this simple routine shouldn’t be a hard task for you!
Optimized Storage in macOS Sierra and later* can save space by storing your content in iCloud and making it available on demand. When storage space is needed, files, photos, movies, email attachments, and other files that you seldom use are stored in iCloud automatically. Each file stays right where you last saved it, and downloads when you open it. Files that you’ve used recently remain on your Mac, along with optimized versions of your photos.
* If you haven't yet upgraded to macOS Sierra or later, learn about other ways to free up storage space.
Find out how much storage is available on your Mac
Choose Apple menu > About This Mac, then click Storage. This is an overview of available storage space on your Mac, as well as the space used by different categories of files:
Click the Manage button to open the Storage Management window, pictured below. (The Manage button is available only in macOS Sierra or later.)
Manage storage on your Mac
The Storage Management window offers recommendations for optimizing your storage. If some recommendations are already turned on, you will see fewer recommendations.
Store in iCloud
Click the Store in iCloud button, then choose from these options:
- Desktop and Documents. Store all files from these two locations in iCloud Drive. When storage space is needed, only the files you recently opened are kept on your Mac, so that you can easily work offline. Files stored only in iCloud show a download icon , which you can double-click to download the original file. Learn more about this feature.
- Photos. Store all original, full-resolution photos and videos in iCloud Photos. When storage space is needed, only space-saving (optimized) versions of photos are kept on your Mac. To download the original photo or video, just open it.
- Messages. Store all messages and attachments in iCloud. When storage space is needed, only the messages and attachments you recently opened are kept on your Mac. Learn more about Messages in iCloud.
Storing files in iCloud uses the storage space in your iCloud storage plan. If you reach or exceed your iCloud storage limit, you can either buy more iCloud storage or make more iCloud storage available. iCloud storage starts at 50GB for $0.99 (USD) a month, and you can purchase additional storage directly from your Apple device. Learn more about prices in your region.
Optimize Storage
Click the Optimize button, then choose from these options.
- Automatically remove watched movies and TV shows. When storage space is needed, movies or TV shows that you purchased from the iTunes Store and already watched are removed from your Mac. Click the download icon next to a movie or TV show to download it again.
- Download only recent attachments. Mail automatically downloads only the attachments that you recently received. You can manually download any attachments at any time by opening the email or attachment, or saving the attachment to your Mac.
- Don't automatically download attachments. Mail downloads an attachment only when you open the email or attachment, or save the attachment to your Mac.
Optimizing storage for movies, TV shows, and email attachments doesn't require iCloud storage space.
Empty Trash Automatically
Empty Trash Automatically permanently deletes files that have been in the Trash for more than 30 days.
Reduce Clutter
Reduce Clutter helps you to identify large files and files you might no longer need. Click the Review Files button, then choose any of the file categories in the sidebar, such as Applications, Documents, Music Creation, or Trash.
You can delete the files in some categories directly from this window. Other categories show the total storage space used by the files in each app. You can then open the app and decide whether to delete files from within it.
Learn how to redownload apps, music, movies, TV shows, and books.
Where to find the settings for each feature
The button for each recommendation in the Storage Management window affects one or more settings in other apps. You can also control those settings directly within each app.
- If you're using macOS Catalina, choose Apple menu > System Preferences, click Apple ID, then select iCloud in the sidebar: Store in iCloud turns on the Optimize Mac Storage setting on the right. Then click Options next to iCloud Drive: Store in iCloud turns on the Desktop & Documents Folders setting. To turn off iCloud Drive entirely, deselect iCloud Drive.
In macOS Mojave or earlier, choose Apple menu > System Preferences, click iCloud, then click Options next to iCloud Drive. Store in iCloud turns on the Desktop & Documents Folders and Optimize Mac Storage settings. - In Photos, choose Photos > Preferences, then click iCloud. Store in iCloud selects iCloud Photos and Optimize Mac Storage.
- In Messages, choose Messages > Preferences, then click iMessage. Store in iCloud selects Enable Messages in iCloud.
- If you're using macOS Catalina, open the Apple TV app, choose TV > Preferences from the menu bar, then click Files. Optimize Storage selects “Automatically delete watched movies and TV shows.”
In macOS Mojave or earlier, open iTunes, choose iTunes > Preferences from the menu bar, then click Advanced. Optimize Storage selects “Automatically delete watched movies and TV shows.” - In Mail, choose Mail > Preferences from the menu bar, then click Accounts. In the Account Information section on the right, Optimize Storage sets the Download Attachments menu to either Recent or None.
Empty Trash Automatically: From the Finder, choose Finder > Preferences, then click Advanced. Empty Trash Automatically selects “Remove items from the Trash after 30 days.”
Other ways that macOS helps automatically save space
With macOS Sierra or later, your Mac automatically takes these additional steps to save storage space:
- Detects duplicate downloads in Safari, keeping only the most recent version of the download
- Reminds you to delete used app installers
- Removes old fonts, languages, and dictionaries that aren't being used
- Clears caches, logs, and other unnecessary data when storage space is needed
How to free up storage space manually
Even without using the Optimized Storage features of Sierra or later, you can take other steps to make more storage space available:
- Music, movies, and other media can use a lot of storage space. Learn how to delete music, movies, and TV shows from your device.
- Delete other files that you no longer need by moving them to the Trash, then emptying the Trash. The Downloads folder is good place to look for files that you might no longer need.
- Move files to an external storage device.
- Compress files.
- Delete unneeded email: In the Mail app, choose Mailbox > Erase Junk Mail. If you no longer need the email in your Trash mailbox, choose Mailbox > Erase Deleted Items.
Learn more
- When you duplicate a file on an APFS-formatted volume, that file doesn't use additional storage space on the volume. Deleting a duplicate file frees up only the space required by any data you might have added to the duplicate. If you no longer need any copies of the file, you can recover all of the storage space by deleting both the duplicate and the original file.
- If you're using a pro app and Optimize Mac Storage, learn how to make sure that your projects are always on your Mac and able to access their files.