This post has been updated in March 29, 2018
Summary: This guide is about how to find and remove junk files on Mac with the junk file remover and Mac maintenance tool. But what files are safe to delete on Mac? How to clean unwanted files from Mac? This post will show you the details.
One way to free up storage space in Mac is to delete junk files in hard drive. These junk files include files in Trash, system files such as caches, temporary files. It is a piece of cake to empty trash can in the Mac.
However, when it comes to system files, regular users have absolute no clue about where to find the files and what these files do in their Mac computers. These system junk or app caches will take up space and slow down your Mac. But as the temp files, and installation support files, and caches from different apps are stored as the way they want, it's not a easy job for a user to clean Mac unnecessary files. And that is also the reason why it's not advisable to find and remove junk files on Mac manually. Now, in this page, you will see a feasible way to remove junk files from Macbook Air/Pro with a free Mac junk cleaner.
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Quick Way: How to Delete Junk Files on Mac with MacMaster
To delete unnecessary files on Mac in one click, you can try FonePaw MacMaster, a professional Mac cleaner that can:
Scan out system files that are safe to delete in your Mac;
Enable you to delete the junk files in one click.
Still wonder how this Mac cleaner works? Click the download button below to free download the app and follow below steps to clean up hard drive in your Mac.
Step 1. Launch FonePaw MacMaster on your Mac. The main window shows the system status of Mac files and also allows you to scan the data on the Mac.
Step 2. To delete system files in the Mac, choose the first one "System Junk".
Step 3. Click Scan to allow the app to scan out system files that are safe to delete. The scanning takes a little longer if there are too many junk files in your MacBook or iMac.
Step 4. After scanning, the program will display the junk files in different categories: Application Caches, User Logs, System Logs and Caches, Localization data.
Tip: To better sort out the junk files, click "Sort" to sort out the files by date and size.
Step 5. Select the files that you don't need, and click "Clean". The program will begin to clean junk files.
Also check the below video guide to see how to optimize and improve the performance on your Mac:
Related Tips: Are Junk Files on Mac Safe to Delete?
"Should I clear cache on Mac?" The answer should be YES! Before select the junk files to delete, you may want to know what these junk files exactly do in your Mac and make sure that they are safe to delete.
The files are used by native or third-party applications to store temporary information and speed up load time. Generally, caching is a good thing, which can improve applications' performance. However, over time, the caches data will grow too larger and occupy storage space.
The files are created when you sync photos between iOS devices and the Mac computer. Those caches will take up space on your Mac, like the thumbnails.
These are caches data of Mail app on your Mac.
It contains files that you have moved to trash can in Mac. There are multiple trash cans in the Mac. Except for the main trash can that we could find in the right corner of Dock, iPhotos, iMovie, Mail all have their own trash can.
A log file of an system records the activities and events of the operating system, such as errors, informational events and warnings, such as a failure audit of login failure.
System caches are caches files generated by apps that causes longer boot time or decreased performances.
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