7 Best Disk Defragmenter For Windows 11 & 10 [Free/Paid] – Defrag Software

The best disk defragmenter tools can easily remove fragments on your hard drive and improve the system’s file reading speed. When you save data on a hard drive it is generally saved in small fragments and these fragments leave space between each other.

When the Windows system reads data from your hard drive it has to read the blank space too Which is just a waste of resources. Using disk defrag software you can remove these fragments and save resources in order to speed up system performance.

There are many tools to defrag disk on Windows 10, 8, and 7 PCs. Here I am going to describe the top 10 tools to help you choose the best for you-

Top 7 Best Disk Defrag Software For Windows 11 & 10 PC [2023]

  1. Smart Defrag
  2. Auslogics
  3. Windows Built In
  4. Defraggler
  5. Glarysoft Disk Speedup
  6. O&O
  7. UltraDefrag


1. Smart Defrag:

Free Version: Yes

Paid Version: $19.99

Supported Systems: Windows 10, 8, 7

File Size: 16MB

Latest Version: V 7.2.0


  • CNet- 4.2 / 5
  • Techspot- 4.8 / 5
  • WindowsReport- 4.5 / 5

smart defrag options

Smart Defrag is one of the best disk defragmenter tools which is developed by Iobit. Along with defragmentation, it has many other useful features.


  • Disk Defrag: It has 5 features for your HDD, SSD, and programs- Analyze, Fast Defrag, Defrag & Optimize, Defrag Large Files, Free Space Defrag, Defrag and Prioritize
  • Boot Time Defrag: There are some files that you cannot defrag while your system is running so, you can select those files to defrag at boot time. The files are registry files, hibernation files, page files, MFT, and system files.
  • Game Optimize: You can add games to this software to optimize and get better gaming performance.
  • Disk Health: At every HDD or SSD i.e. C, D, E you will see a graph shape icon. By clicking on that you will get the health of the disk.
  • Add Files: Using this feature you can add folders and files to defrag them.

How This Disk Defrag Software Works:

Step 1: Download and Install the software from official website of IObit.

Step 2: Launch the software and click on activate and follow the instructions to get the license key for the pro version.

Step 3: After updating to the pro version launch the software and you will see the following screen on your PC-

Iobit Smart Defrag


Step 4: Click the disk you want to defrag. Below this, you will see a button “Smart Defrag”. On this button, you will see a right arrow click on it and you will see the following options- Analyze, Fast Defrag, Defrag & Optimize, Defrag Large Files, Free Space Defrag, Defrag and Prioritize.

Step 5: You can choose any of them or just click on “Smart Defrag” to let the program select the best option for you.

Step 6: After this, you should see the following screen. You can pause or stop the process if you want.

smart defrag final

As we can see Smart Defrag is the best software for disk defragmentation and using this tool is very simple.

2. Disk Defrag Free by Auslogics

Free Version: Yes

Paid Version: $8.51/year

Supported Systems: Windows 10

File Size: 17.5 MB

Latest Version:


  • CNet- 4.4 / 5
  • PCWorld- 3 / 5
  • Toptenreviews- 3.5 / 5

auslogics disk defrag

Auslogics has been developing PC software for 10 years and they have an impressive list of PC software. Disk Defrag Free is one of the finest software by the developer.

Here are the Features of this best disk defrag software:

  • Defrag: You can choose the following options to defrag any of your disks-
      1. Analyze
      2. Defrag
      3. Defrag & Optimize
      4. Quick Defrag
  • Offline Defragmentation: it is available for the pro version. In this option, you can select all the disks at once. It will select multiple files in the process of defragmentation and optimization i.e-
      1. MFT Files
      2. Paging Files
      3. Hibernation Files
      4. Registry Files
  • Run Condition: In the offline defragmentation feature tab you will find the ‘run condition’ option where you can choose whether to run the defragmentation during the next boot or every boot.
  • SSD Optimization: Using this feature you can easily optimize your SSD in order to achieve better performance.

The advanced features make it one of the best software for disk defragmentation on Windows 10, 8, and 7 PC

3. Windows Built-In Disk Defragmenter

Free Version: Yes

Available for: Windows 10, 8, 7

As we all know Windows is a very advanced operating system. It knows the needs of the system. So, Microsoft pre-installed the “Disk Defragmenter” tool on your Windows system. It is easy to use and has a very decent interface.

windows built in disk defragmenter


  • Analyze Disk
  • Defragment Disk
  • Schedule Defragmentation: In this option, you can choose to defrag the Disk daily, weekly and monthly.

This inbuilt tool is very efficient in defragging disks on Windows 10, 8, and 7 PCs.

4. Defraggler

Free Version: Yes

Paid Version: $24.95

File size: 7.2 MB

Available for: Windows 10, 8, 7, XP


  • Toptenreviews: 4/5
  • Cnet: 4.1/5
  • Softonic: 4/5
  • Slant: 4.7/5


If you are a Windows user then there are good chances that you would have heard of CCleaner. Well, it is one of the most popular programs for Windows PC. Defraggler was developed by the same company that developed Ccleaner, which is Piriform. Defraggler is the fastest and best disk defragmenter software for Windows.


  • Analyze: It will show you fragmented files and the health of your disk.
  • Defrag & Quick Defrag: Using this feature you can easily defrag the selected drive on your PC.
  • Health: This feature will tell you the health of your computer so you can take action to improve performance.
  • Benchmark: Using this feature you can benchmark any of your disks and know the read speed.

5. Glarysoft Disk Speedup

Free Version: Yes

Paid Version: $24.95

File size: 7.04 MB

Available for: Windows 10, 8, 7, XP

Latest Version: (last update 27 Oct 2021)


  • Toptenreviews: 4 / 5
  • Cnet: 3.5 / 5
  • Softpedia: 4.3 / 5
  • Filehippo: 8 / 10

glarysoft disk defrag

Glarysoft Disk Speedup tool is the best disk defrag software for Windows 10 PC. It is a powerful tool with a decent user interface.


  • Defrag: One-click defragmentation of single or multiple drives.
  • Defrag a File: You can select a single file to defrag.
  • Defrag a Folder: You can select a folder for defragmentation.
  • Exclude: In this option, you can exclude files that you don’t want to include in the defragmentation process
  • Schedule & Boot time: Using these features you can easily schedule a time to defrag or do this process at boot time.

6. O&O:

Free Version: Yes

Paid Version: $29.95 (as per the website but it gave me an offer of $19.90 while I was installing the software)

File size: 25.7 MB

Available for: Windows 10, 8, 8.1

Latest Version: 25


  • Techradar: 4 / 5
  • Cnet: 3.8 / 5
    Spiceworks: 3.5 / 5
  • Softpedia: 4.1 / 5

o and o defrag software

O&O disk defrag is a feature-rich disk defrag software. The company provides software for individuals, and professionals, at the company level (workstation) and server level (for Windows). Let’s discuss the features of this best disk defragmenter tool for Windows 10, 8, and 7.


  • Defragmentation at the time of startup.
  • Get a complete report of your drives.
  • See the largest files and the files that need to defrag the most.
  • Disk Cleanup: Using this feature you easily delete redundant files as temporary files, recycle bin, memory dumps, thumbnail cache, and Windows error reports in just one click.
  • Cluster Inspector: See the report of the free and used clusters on your drives.

7. UltraDefrag 9:

Free Version: Yes

Paid Version:

File size: 25.7 MB

Available for: Windows 10, 8.1, 8, 7, Vista, XP SP3, Server 2019, 2016, 2012, 2008, and 2003 9both 32-bit and 64-bit0

Latest Version: 7.1.4


  • Sourceforge: 4 / 5
  • Filehorse: 7.7 / 10

ultradefrag 9

Another in the list of the best disk defrag software is UltraDefrag 9. This software is available for free on SourceForge and the official website UltraDefrag. It is a very simple and fast defragmenter for Windows 10 computers. Let’s discuss the features of this best disk defrag software.


  • Defrag your locked files.
  • Optimize drives for better performance.
  • Defrag data streams and metafiles.
  • Defrag separate files.
  • Automatic Process: This is the best feature of this tool. The tool will automatically defrag files when needed.

So, these were the 7 best disk defragmenter software to defrag drives on Windows 10, 8, and 7 PC. If you have any defrag software in your knowledge that deserves a place on this list then please mention it in the comment section.


Q1. What is the best free defrag program?

Answer: You can use Windows built-in disk defragmenter program it is completely free.

Q2. Is it good to do disk defragmentation?

Answer: Yes, to keep your system performing at its best and keep your drives healthy you should do defragmentation.

Q3. Does defrag speed up the computer?

Answer: After defragmentation, the computer will be able to read files faster because it will not have to read the blank space.

Q4. How do I run Disk Defragmenter?

Answer: Go to the start button and search “defrag” You will see “defragment and optimize drive” click on this and follow the instructions.

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