MyDefrag (formerly JkDefrag)

by Jeroen Kessels

MyDefrag is an open-source disk defragmenter and optimizer for Windows systems.

Operating system: Windows

Publisher: Jeroen Kessels

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MyDefrag (formerly JkDefrag)


MyDefrag (formerly JkDefrag) is a defragmentation utility for Windows XP, Vista, 7, 8, and 10. It is a free and open source software. It is designed to optimize hard drive performance by rearranging files to make them more accessible. It is very easy to use, and can be set up to run automatically in the background.

MyDefrag offers powerful command line scripting that simplifies customizing and automating its disk defragmentation operations.

MyDefrag comes with numerous features that make it a powerful and effective tool for optimizing hard drives:

• Automated defragmentation: MyDefrag can be set up to run automatically in the background on a schedule, or manually. It can be configured to run when the computer is idle, or when it is not in use.

• Customizable defragmentation: MyDefrag can be customized to defragment specific files or directories, or to exclude certain files or directories. It can also be configured to move files to specific locations on the hard drive.

• Command line options: MyDefrag can be used with command line options to control how it is run, and to automate its execution.

• Advanced scripting capabilities: MyDefrag can be scripted to perform complex operations, such as combining multiple defragmentation tasks into a single operation.

• Optimization scripts: MyDefrag comes with several pre-defined optimization scripts that can be used to optimize hard drives for specific purposes. These scripts can be customized to meet specific needs.

• Support for advanced features: MyDefrag includes advanced features such as boot-time defragmentation, support for Windows NTFS, and support for multiple hard drives.

• Easy to use: MyDefrag is easy to use, with a simple, intuitive interface.


MyDefrag is an excellent tool for optimizing hard drives. It has many features that make it a powerful and effective tool, and it is easy to use. With its advanced scripting capabilities and customizable options, it is a great choice for those looking to optimize their hard drives.
MyDefrag (formerly JkDefrag) is a free, open-source hard drive defragmentation and optimization utility for Windows. It works on Windows XP, Windows Vista, Windows 7, Windows 8 and Windows 10.

MyDefrag requires a computer with a Pentium-compatible processor or higher, at least 128MB of RAM, and a hard drive of at least 200MB of free space. It also requires a FAT32, NTFS, or exFAT file system. The software has been tested on computers with up to 4TB of storage.

In order to use MyDefrag, the user must have administrator rights on the computer. The software must be installed on the hard drive in order to use it.

Highly customizable with scripting options.
Runs as a screensaver when the system is idle.
Free and open-source.

Limited features compared to other defragmenting software.
No automatic scheduling for defragmentation tasks.
Outdated user interface; not user-friendly.
image/svg+xmlBotttsPablo Stanley Körner Finn C********m
MyDefrag (formerly JkDefrag) is a great tool for optimizing the hard drive. It can be used to organize files, reduce fragmentation, and improve system performance. I found the interface to be quite user friendly. It was easy to select the drive I wanted to defrag and the type of defragmentation I wanted to run. The program also offers a variety of scheduling options, allowing you to automate the defragmentation process. The defragmentation process itself was quite fast, taking only a few minutes for a large drive. The program also offers the option to exclude certain files, which is useful if you want to exclude large files that don't benefit from defragmentation. Overall, I found MyDefrag to be a great tool for optimizing my hard drive.
image/svg+xmlBotttsPablo Stanley Körner Lucas Q*********f
MyDefrag is a great defragmentation and optimization tool. It is intuitive and easy to use. It allows you to set up a schedule and customize the settings for each disk. The interface is clear and the results are fast. Additionally, it includes a number of useful plugins.
image/svg+xmlBotttsPablo Stanley Körner Riley Navales
MyDefrag (formerly JkDefrag) is an incredibly useful softwre for optimising your computer's performance, although it is a bit tricky to configure at first.
image/svg+xmlBotttsPablo Stanley Körner Freddie Kersting
This software is a disk defragmentation tool that reorganizes files on a computer's hard drive to improve system performance. It offers several defragmentation methods, including optimization for specific file types and the ability to move frequently accessed files to faster parts of the disk. Additionally, it can perform other disk-related tasks such as disk cleanup and disk checking. Overall, this software aims to improve system speed and efficiency by optimizing disk usage.
image/svg+xmlBotttsPablo Stanley Körner Andrew G.
MyDefrag is a free and powerful disk defragmentation software that offers extensive customization options and efficient performance.
image/svg+xmlBotttsPablo Stanley Körner Blair
Highly efficient, customizable, comprehensive disk defragmentation.
Fast, disk defragmenter, speeds up computer
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