[Windows OS] Best PC Cleaner Free Download

Why do you need a PC cleaner?

It's only a matter of time before you fill it up, even if your PC installs a TB drive. Slow computer performance is a common outcome of not cleaning your computer for a long time, not to mention lagging or regularly frozen PC.

▶ Common junk files on PC

Besides what you download from the Internet, various data files will be stored on your PC no matter whether you need them or not.

• Temporary system files
System files can be created and saved even you turn on or off your computer. They are used to boot or shut specific critical functions or programs. When system files have served their job, they become obsolete and won’t be not automatically cleared.

• Cache files
A cache is temporary storage space that enables a device, browser, or app to operate more quickly and effectively. After you access an app or website for the first time, a cache saves files, pictures, and other pertinent data on your device. The cached data is then utilized to swiftly load an app or website for each future visit. When you first view a webpage, the information on that page gets cached on your computer. Then you may reopen this page more quickly the next time.
The system cache in Windows is a quick storing technique. It might be a standalone high-speed storage device or a dedicated area of main memory.

• Thumbnails
Thumbnails can assist a photo load faster if you need them again, but most of the time your PC only needs them once or you'll have to wait a long time for the same image to be returned. When you return to the image, a new thumbnail is always generated.

• Program files
Program files are designed to assist you with installing and running application apps on your device. Once the installation is complete, some files become outdated, and there will be a large number of registry files and other data once you boot the applications each time. Furthermore, certain apps may contain further malware.

When these junk files pile up, sorting and filtering through all of your files and applications may be extremely difficult and time-consuming, especially if done manually.  PC cleaner tools can assist you in removing old and unneeded files from your computer, therefore increasing its overall performance. They often delete temporary files, items left unused in your Downloads folder, and objects in your Recycle Bin.

How often do you need to clean your PC?

Cleaning the computer should become a regular work, otherwise, the computer's performance may suffer. If you are not a deep user, home computers may be cleaned once a year on average, but workplace computers should be cleaned every 1 to 3 months.

Best Windows PC cleaner free download

Although Windows has some built-in tools to help you clean your computer such as Disk Cleanup, Storage Sense and directly deleting files, these tools can’t thoroughly clean all junk files and you may delete important files by mistake.

In this case, we suggest you choose a third-party PC cleaner. Windows free PC cleaner, AOMEI Partition Assistant Standard, is a disk and partition manager for Windows 11/10/8/8.1/7/XP. Its “PC Cleaner” feature can scan your computer and find all junk files hidden in your disk, then you can select the files to clean or not.

Step 1. Open AOMEI Partition Assistant Standard, in the main interface, select "Free up" and "PC Cleaner".

Step 2. Click "Start Scan" to scan all junk files hidden in your PC.

Step 3. Wait patiently for scanning the junk files.

Step 4. After scanning, this cleaner will automatically classify and select some junk files, you can directly click "Clear All" or add other unwanted files.

Step 5. After completing, the cleaning task, click "Back".

Bonus tips: Delete large files to release free space on your PC

If you find that only cleaning junk files can’t release sufficient space on your disk, you can upgrade this PC disk cleaner to the Professional Edition to choose the “Delete Large Files” feature to reclaim available space. The software will scan all large files that are stored in the deep folder.

Step 1. Click "Free up" and "Delete Large Files" in AOMEI Partition Assistant.

Step 2. In the pop-up window, select the partitions that you want to find large files, and click "Start Scan" to scan for large files.

Step 3. When the scan is complete, all large files found are listed. Tick the files you want to delete, and then click the "Delete" button.

Step 4. This step will list all the files you have ticked to delete, click "Delete Now" after confirming that it is correct, then these files will be deleted successfully.

Ending lines

Download this free PC cleaner to easily and securely clean your disk regularly! AOMEI Partition Assistant is a multifunctional disk manager, besides disk cleaning, it can also clone disk, migrate OS, convert a disk to MBR/GPT without data loss, and move folders and installed programs… And if you need, you can choose the Server Edition to manage your Windows Server 2025/2022/2019/2016/2012(R2)/2008(R2)/2003.