JkDefrag – A free defragmentation tools for window

JkDefrag LogoJkDefrag is a famous disk free and open source defragmentation tools. It is optimizer for windows 2000/2003/XP/Vista/2008/X64. Besides that, JkDefrag is completely automatic, very easy to use, fast, low overhead, and can handle floppies, USB disks, memory sticks, and anything that looks like a disk to Windows.


JkDefrag is come with the commandline version (for scheduling by the task scheduler or to work for administrator scrtips), screensaver version, and DLL library version. 


How to run JkDefrag?

There is no installation needed for JkDefrag, you just need to unzip the downloaded file and double click to run the application.



The color lebel use in JkDefrag:

  • Black: empty
  • Green: regular files, unfragmented
  • Dark green: spacehogs, unfragmented
  • Yellow: fragmented
  • Red: unmovable
  • White: busy
  • Pink: MFT reserved zone (NTFS only)
  • Gray: in use by unknown data



Click here to go to JkDefrag Page
Click here to download JkDefrag 3.36 (Window 2000/03/XP/Vista/08)
Click here to download JkDefrag64 3.36 (window 2003/XP/Vista/08 64bit)
Click here to download JkDefrag src 3.36(sources for Microsoft Visual C++ 2005)


jkdefrag GUI screenshot
jkdefrag GUI screenshot
jkdefrag command screenshot
jkdefrag command screenshot


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