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IObit Smart Defrag

A stable and lightweight disk defragment utility that will improve your drive performance

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IObit Smart Defrag screenshotSmart Defrag is a small and reliable application that will defragment your disk drive and will improve its speed and performance. The software features the "Boot Time Disk Defrag" technology which will intelligently streamline your documents and files based on their usage frequency in order to improve your access and increase disk speed.

Smart Defrag also benefits from the unique Deep Analyze technology, that gives it the power to clean your temporary and junk files before starting the defragmentation process, saving precious disk space for you. Smart Defrag is capable of running in background without affecting your system performance and without interrupting your work. This application works well on large drives too and supports the Windows 8.1 Metro interface.


  • The interface is simple and intuitive.
  • Lets you schedule tasks.


  • The program may run slow occasionally.
  • The setup installs other products automatically.
Name IObit Smart Defrag
Developer | see all products from this developer
Product Homepage IObit Smart Defrag
License Adware
Last Week Downloads 1
All Time Downloads 7,243
Filename sd5_setup.exe
Filesize 12.3MB
MD5 Checksum BA2963F6ACE34F6BE7695C0E626461BF
OS Support Windows All
Category Utilities

100% CLEAN Certification

BadgeIObit Smart Defrag has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
IObit Smart Defrag August 16, 2017 - Latest Version
IObit Smart Defrag July 29, 2016
IObit Smart Defrag February 26, 2016
IObit Smart Defrag July 21, 2015
IObit Smart Defrag June 09, 2015

Download the free IObit Smart Defrag