How to free up space on Mac? System tools and Dissy


Many computers today have a lot of storage capacity, but even if your drive has a lot of free space, there will come a day when you will fill it completely.
In this article, you will learn how to free up space on Mac and why it is important to do so.

Why is it necessary to clean up disk space Mac (clean up disk space on Mac)?

Having enough free space on your computer is important for you and for the computer itself.
Overfilled memory will not affect the speed of your computer in the best way.
Applications and processes can slow down significantly, interfering with your work.
There is even a chance that one day you will not be able to start your Mac, because its memory will be completely full.
Also, the lack of free space will reduce your options. You won’t be able to download and create new files until you clear up space on Mac.

How to check what is taking up space on your Mac?

Before you start cleaning your computer from unnecessary files, you need to check what exactly is taking up free space.
That’s easy to do: click on the Apple icon, then click on “About this Mac”. After that click on “Storage” and you will see how much space is being used, how much free space and what things are taking up space.

So how to clear disk space Mac (clear disk space on Mac)?

Remove apps you don’t use

The first and most obvious way to clean up space on your Mac is to uninstall apps you no longer need. This is quite simple to do.
Launch Finder and go to the Applications folder. Then find the app you want to remove, right-click on it and click on “Move to Trash”.
Some applications also have an uninstaller, or the installer itself performs the uninstaller functions. You can also try to use it to delete the application and clear storage on Mac.

Clean up your Desktop

Remember to clean your desktop regularly. Many users save various files to the desktop that they want to use right away, but then forget to delete them.
To avoid having a lot of unnecessary files on your desktop, you need to delete them after they become unnecessary.
If you have quite a few different files there, you can organize your desktop to group items into categories. To do this, you need to click on your desktop and select “Use Stacks”.
Now all files of the same categories will be located next to each other and it will be easier for you to delete them.

Move files to the iCloud

The iCloud will help you significantly expand the available space on your computer.
By default, only 5 GB of cloud storage is available to users. As you can imagine, this amount of free space will not help you much, so we recommend that you buy more free space on the iCloud.
This will help you not only clear storage on Mac, but also have access to files from all your devices.

Remove browser cache

Another way to free up memory on Mac is to clear your browser cache. This will be useful for those who often use the Internet.
Here’s how to clear the cache for different browsers:


  1. In the menu at the top of the window, click on “Develop”.
  2. Then click on “Empty caches”.

Mozilla Firefox

  1. Open the menu at the top of the window and select “Settings”.
  2. Go to the “Privacy & Security” tab.
  3. Click on “Clear Data” in the Cookies and Site Data section.
  4. Uncheck “Cookies and Site Data”.
  5. Click on the “Clear” button. The changes will automatically be saved.


  1. Open the menu at the top of the window.
  2. Click on “More tools”, then “Clear browsing data”.
  3. Now you need to choose a time range for clearing data.
  4. Don’t forget to clear “Cached images and files.”

Delete Junk Mail

Some space can be freed up by deleting Junk Mail. Mac has a built-in option to do this:

  1. Open the Mail application.
    Click on the “Mailbox”.
  2. Click on “Erase Junk Mail”.

Compress files

If you have large files and folders on your computer that you don’t need right now, but don’t want to delete them, you can compress them to free up space.
Follow these steps to compress the folder:

  1. Open Finder, open your Documents.
    Press command and click on a folder or folders you want to compress.
  2. Click on “Compress”.

Clean up the Trash

After you move all unnecessary files to the trash, do not forget to empty it. To do this, right-click the Trash icon and click on “Empty Trash”.

Use an external drive

If these methods didn’t help you clean up hard drive Mac (clean up hard drive on Mac), you can buy an external drive. Now there are many different models with different capacities, so you will have plenty to choose from. But this option is quite expensive.
Another way to help you get more free space is to use the dedicated Dissy app:

Use Dissy

But if you want to use a more convenient way to free up space on Mac, you can try using the Dissy app.
It contains all the useful functions that will allow you to get rid of unnecessary files in a few clicks and thereby get more free space on your computer.
Download Dissy on the official website and you can get started right away.
This application can scan not only drives that are inside your computer, but also cloud storage such as Network Drive, OneDrive, Google Drive, Gmail, Google Photos and Dropbox. To scan a drive or folder, you need to launch the app, find the drive or folder you need and click on the “Scan storage” button next to it.
After the scan is completed, you will see a list of all the folders and files that are in the directory you selected. You can sort the items by date, size, type and name. These sorting options will help you quickly find the files and folders that you need to delete in order to clear up space on Mac.
At the top of the window, you will also see a graphical representation of the used space and you can also navigate through the directories with it.

Find duplicates

Dissy also helps you find duplicates. To do this, you need to go to the “Duplicates” tab, select the directory that you want to check for duplicates and start scanning.
After the scan results are ready, you can remove duplicate files.
To make it easier for you to find large files, Dissy has a feature that allows you to search for large files.

Find Large Files

To use it, you need to go to the “Large files” tab, select the directory you need and start scanning.
After that, you will see a list of the largest files. Review this list carefully and remove any files you don’t need.
And if there are folders that you want to constantly monitor, you can add them to the “Quick Access” panel. Thus, you will not have to search for the folder you need every time. All you need to do to scan the folder that is on the “Quick Access” panel is to launch Dissy and click on the “Scan storage” button next to the folder that is already on the main screen.

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Frequently Asked Questions

Start Dissy. The application will automatically open in the “Scan & Analyze tab”. There you will see a list of all drives connected to your computer. Click on the "Scan Storage" button next to the drive you want to scan, and the program will start scanning. To scan a specific folder, you can open it through the menu at the bottom of the window.
To fix this problem, open a terminal, enter «sudo nano /etc/hosts», then enter « localhost» and save.
Dissy is fully compatible with Windows, Mac and Linux operating systems. So it can be used on almost any machine.
Yes, it is possible. To prevent the folder from being scanned, it must be added to the “Important” section. To do this, you need to scan the folder in which the folder you need is located, and opposite it in the menu select “Add to Important”. Thus, the selected folder will not participate in further scans, and you will not be able to accidentally make changes to it or delete it.