SmartDefrag, developed by IObit, is a free defragmentation utility, which allows users to defragment individual files on their computer system. Defraggler runs on Microsoft Windows; it has support for all versions since Windows 2000. It includes support for both IA-32 and x64 versions of these operating systems.


SmartDefrag can defragment an entire disk partition, either by the user's command, automatically on a schedule or in background and at boot time.[2][unreliable source?] It has three manual defragmentation modes: straight defragmentation (fastest), fast and "deep" optimization.

Can also start at boot time to keep selected volumes constantly defragmented, in a way similar to Diskeeper's "set it and forget it"[3]; it can be set to start auto defrag only when the system is idle, allowing even to stop activity when resource usage rise above a set level.

According to Lifehacker[4] and TechMixer reviews, it has "the world’s fastest defragmenting engine. It’s been specially designed for modern, large hard drives, so it eliminates long waiting time"[5]

SmartDefrag was given a 5/5 star rating from CNET editors and 4/5 star rating from CNET users.[6]

See also


  1. Download SmartDefrag. CNET. Retrieved on June 20, 2012.
  2. Best Free Disk Defragmenter: Smart Defrag. Tips and Freeware (March 21, 2012). Retrieved on June 21, 2012.
  3. Update Smart Defrag! Speed! Multitask! ZOOM!. MuskegoPatch (May 15, 2012). Retrieved on June 21, 2012.
  4. Five Best Disk Defragmentation Tools. Life Hacker. Gawker Media (October 30, 2011). Retrieved on June 21, 2012.
  5. Smart Defrag – Free Disk Defragmenter. TechMixer. Retrieved on June 21, 2012.
  6. Smart Defrag - CNET Retrieved on June 20, 2012.

External links

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