Free Mac Storage Cleaner

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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.

Error dmg image is corrupted. I relaunched Finder and logged out immediately, not re-opening any applications.Then I logged back in after I had been logged out and clicked Finder Applications Utilities && finally I opened the 'Terminal' application.MAKE SURE NO DISK IMAGES ARE MOUNTED OR OPENOnce in Terminal, I typed the following:sudo chmod 775 /Volumestyped in my password, and mounted my disk image!Voila! I was getting this error in High Sierra and it had been bugging me for a while.So I investigated the volumes I had mounted using Disk Utility and found that there were two uninitialized volumes remaining that I couldn't format, mount or erase.What solved the problem for me, was clicking the Apple symbol in the upper-right hand corner and searching for 'Force Quit'.

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:

Disk Cleaner Mac

  • 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.
Keep your Mac clean and fast with CleanMyMac X. It removes junk from your Mac, monitors hardware health, and speeds up your system with maintenance scripts. Download CleanMyMac free and see what a cleaner Mac can do.
So you think your Mac is clean? Think again. Your Mac is like your digital home. You need to fix things that are broken but you also need to clean and do maintenance so they don’t break in the first place. People can get used to poor performance but a good Mac cleaning app can unlock speed that you didn’t know was there.
On average a person running CleanMyMac will remove 135 GB of space.
Up to 14K
Up to 10
Up to 20K
Up to 320
Up to twice
There are all kinds of junk files on your Mac: cache, logs, app leftovers, and what not. CleanMyMac knows where to look for these files and which of them are safe to remove. Just scan, hit Run, and voilà — gigabytes of junk are gone. Top-to-bottom Mac cleaning has never been easier.
CleanMyMac X is more than a Mac cleaner — it’s a maintenance powerhouse. When your Mac needs a performance boost, CleanMyMac steps in with a set of maintenance tools. You can free up some RAM, reindex Spotlight, or speed up Mail to help your Mac run smoothly.

Best Free Mac Cleaner 2019

With CleanMyMac X, it’s easy to monitor your Mac’s performance. The Menu shows real-time statuses of your hard drive, memory, battery, CPU, network speed, and even your Dropbox space. And if anything goes wrong, you can fix the issue right away.
There’s more than music and pics in your iTunes and Photos — there’s also junk like iOS data and cache. CleanMyMac X cleans it up to make room for the stuff you need.
When you just drag an app to the Trash, it leaves a ton of files behind. To keep your Mac clean, remove apps the right way — uninstall them completely with CleanMyMac X.
CleanMyMac helps you keep private things private. It wipes out the traces of your online activity, like browser cookies, Skype Recents list, and Messages history.
Why waste space on files you haven’t opened in years? CleanMyMac brings old files out of the depths, so you could delete those you no longer need.
Don’t let improperly running apps slow down your Mac. Identify and quit hung applications and manage heavy memory consumers — all from one place.
A good Mac cleanup includes taking out the garbage. Empty all trash bins with one button: your Mac’s Trash, Mail Trash, and every other trash there is.

CleanMyMac X

Easily clean and manage your drives

With CleanMyDrive 2, cleaning hidden junk clogging up your drives is extremely easy and fun. Choose one manager for all your external and internal drives and make the storage-related chores a breeze.

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*4.9 - rating for all versions, based on 539 user reviews.

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