Start64!The Windows Registry grows as data is added to it, but it never shrinks when data is removed. A bloated registry with a lot of empty space can slow down the boot time as well as performance. Registry Defragmenter and Compactor will rebuild and re-index your registry to eliminate structural mistakes and corruption.

Registry Defragmenter & Compactor 64bit version 

Windows registry is a database used to store critical data of Windows and other applications. Almost all applications write to and read from the Registry. When you install applications, it will add data (keys and values) to the Windows Registry and its size will increase. As data is added, the Registry will become more and more fragmented. But even if this data is deleted from it when applications are uninstalled, the size of the Registry will not decrease. This is because the data will be replaced with empty cells. Since most of the Registry will be loaded in the memory by Windows all the time, the size of the registry is important. The empty cells will also be a privacy threat. Just like a file deleted from Windows can be recovered, there is a possibility that this deleted data may be recovered using undelete tools.

'Registry Defragmenter and compactor' works by building a fresh registry and replacing the current registry with the new one. The newly created registry will be devoid of empty cells and will be defragged. The size of the Registry will decrease by removal of this empty cells. A smaller Registry means faster Windows boot up time. A defragged Registry allows faster read operations for Windows and other applications and improves system performance, analogous to a disk defragmenter. 


  • Repairs defects by rebuilding your registry.
  • Remove fragmentation with a linear and sequential registry.
  • Compact registry by removing gaps and unused space.
  • Improve system performance due to faster registry load/read.
  • Protect privacy by erasing previously deleted registry cells.


  • Windows 2000
  • Windows XP 32/64 bit
  • Windows Server 2003 32/64 bit
  • Windows Vista 32/64 bit

 Registry Defragmenter & Compactor 64bit version
Registry Defragmenter & Compactor - 64bit software