Then you need to remove app leftovers. CleanMyMac works fine on macOS High Sierra and earlier OS. Launch CleanMyMac. Choose Uninstaller tab. Scroll through the list of apps. If you spot any app that you’ve deleted, check them. Delete the app leftovers you’ve chosen. You can also find and remove broken login items with the help of System. For any other app/file which are locked, try to unlock it by unchecking the 'locked' box in 'Get Info' first. If the box is greyed out, run the following in Terminal: cd /Applications sudo chflags noschg 'Karabiner-Elements.app' Then delete it by right click 'Move to Trash'. Filter apps by Vendors, Stores, or type (e.g. It’s now safe to delete any 32-bit apps since they don’t even launch on macOS Catalina and later) Select the apps you don’t want anymore and hit Uninstall. Now all the selected apps and their files are completely gone from your system, creating lots of free space. User (or App) cache. These cache files created by all the apps that you use on Mac. It includes apps that came with your macOS (like Mail) as well as 3rd-party apps (like Sketch). Every applications creates a lots of cache - it wouldn’t be surprising to clear up gigabytes of space when cleaning app caches. These cache data. Delete apps on your Watch as you do on your iPhone—tap and hold until the icons wiggle. While you can remove third-party apps from the Watch app on your iPhone, you can't do that with built-in.

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Your Mac takes care of routine maintenance behind the scenes eventually, but that doesn’t mean you can’t keep things tidy yourself in the meantime. One easy way to keep your Mac running its best is to occasionally clean the cache.

How to clear cache files step-by-step?

There are three types of caches you can clean on your Mac:

User (or App) cache. These cache files created by all the apps that you use on Mac. It includes apps that came with your macOS (like Mail) as well as 3rd-party apps (like Sketch). Every applications creates a lots of cache - it wouldn’t be surprising to clear up gigabytes of space when cleaning app caches.
System cache. These cache data created by the built-in macOS system services that run your Mac.
Browser cache. All browsers store your browsing history and cache data from websites you visit. You know how you shop for something online and then for weeks you’re seeing it everywhere? That’s because your browser caches hundreds of files that make up the websites you visit. Caches also include cookies and trackers that save information about your browsing history and report the data back to the site. This works out in your favor when you return to a site without having to log in again, but it can also leave you feeling like your computer is spying on you.

Old cache files do nothing but cluttering your system and slowing down your Mac through all the wasted space it is taking up. Here's a guide to cleaning all these caches, at the end of which your Mac will be lighter and leaner.

The guide to clean all caches on your Mac

Besides browser and website information, your Mac keeps several caches of its own for different reasons. The good news is you can clean them up manually, or you can clean them with a special app which can clear the browser cache in Safari, Chrome, and Firefox, as well as your system cache, email cache, user cache files, and even your DNS cache files.

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Delete user caches on a Mac

User cache makes up the majority of junk data on macOS. Your applications accumulate user's cache data on a hard disk the longer they are in use. Some apps and utilities can build up cache sizes that reach into gigabytes. This is often just a waste of space, particularly with apps you don’t use every day. By clearing your user apps cache files, you’ll be amazed at how much hard disk space you can reclaim.

Note: Manually clearing cache files on a Mac is something that anyone can do. It takes some time and patience, but if you follow our instructions, you can get the job done all by yourself. Please follow the instructions closely.

Clean up cache files manually

To find and clear your user cache manually, do the following:

In your Mac’s user folder, there’s a hidden Library folder, which itself contains a folder of caches left by the applications you’ve installed on your Mac.
Strongly recommend that you remove the insides of ~/Library/Caches and /Library/Caches folders, but not the folders themselves.
Want to make sure your junk user cache data is gone forever? - Empty out your Trash.

If you are unsure and want a safer option, go ahead and learn on how to use CleanMyMac to handle caches properly. It will find up to 5x more junk cache data to remove from all over your system.

Get rid of cache files with CleanMyMac

Launch CleanMyMac app.
Select System Junk in the left sidebar.
Hit Scan at the bottom of app's window.
Then click Clean.

And you're done! If you’d like to remove only cache files and nothing else, click on Review Details before clicking Clean. Deselect everything but System Cache Files and User Cache Files, then click Clean.

Delete system caches on Mac

System cache files are generated by OS X and, unlike application cache, have nothing to do with the user. The hidden system caches are mainly created by the apps that run on your Mac. The clearing of system cache is not recommended in manual mode, unless you are very careful or trying to fix a problem. System cache files do not generally take up much space, which is another reason why a clean out isn’t as necessary as with user cache.

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Clean up system cache data manually

You can find and delete system cache in the same way as user cache, by

Going to ~/Library/Caches and hit Enter to removing the insides of the folders with the app name.
System cache folders are named com.apple and should be backed up for safety.
Go into the com.apple folders and delete the files inside of them. Only the files, not the folders!
Right click on the Trash icon and “Empty Trash”.

That’s it, now, just like with your user cache, your system cache is also clear.

Be careful: not all app cache files can be safely deleted. Some app developers keep important information on cache folders. The great idea to backing up a folder before you erase all files inside. If everything works fine, you can delete this backup.

One-button solution to cleanup macOS caches

CleanMyMac is such a great tool because it lets you perform the exact maintenance you want, or run a Smart Cleanup scan with a single click and have the software make recommendations.

Clean up browser caches

We love our browsers but we don’t love it when they start to use up hard disk space with cache files. Whether you’re wanting to free up space, get your browser performing better or trying to remove your history for the sake of privacy, removing your Mac browser cache will help.

Flush DNS caches

Your Mac’s DNS cache is a list of all the DNS queries that were resolved for every site. When you type in 'setapp.com,' the DNS server resolves that to a numerical IP address. But if you notice a site not loading, or your browser acting up or working too slowly, resetting the DNS cache might be the cure.

To flush DNS cache manually

Open Terminal (⇧ Shift+⌘+U, and double-click on Terminal)
Type this into Terminal: sudo dscacheutil -flushcache;sudo killall -HUP mDNSResponder;say cache flushed
Press Enter to run and fill your admin password to execute the command.

To clean your Mac’s DNS cache in one click

Open CleanMyMac and select Maintenance in the left sidebar
Check the box for Flush DNS Cache
Click the Run button at the bottom of the window

Your browser cache is essentially saved bits of the websites you’ve visited recently. That way, if you go back, your computer can re-use locally cached elements that haven’t changed, which speeds up load times versus reloading everything fresh from the remote ser

How To Erase Apps On Macos