Smart Defrag

Smart Defrag

Download Editors' Rating:
Average User Rating:
out of 2927 votes

Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    March 30, 2010
  • File Size:
  • Downloads Last Week:
  • Operating Systems:
    Windows 98/Me/NT/2000/XP/2003/Vista/Server 2008/7

Editors' Review


There are plenty of downloadable defrag utilities to choose from, but it's hard to beat the ease of use and helpful extras in IOBit's Smart Defrag.

With this utility you can quickly analyze your hard drive to check the level of defragmentation before committing to a scan. The interface shows you different-colored blocks representing fragmented files, frequently used files, and more, with a helpful key to show what each colored block represents.

When you're ready to pull the trigger, you can choose from a straight defragmentation (fastest), or have Smart Defrag perform either a fast or "deep" optimization after defragmentation. Our test machine has a rather full hard drive, so even using the Fast optimization took close to 30 minutes. Depending on your hard drive and level of defragmentation, your mileage may vary.

In addition to the solid defragmentation tools, you can have Smart Defrag automatically defrag the files you use the most without significantly slowing down your system. Even while performing a full defragmention and optimization run, the program barely uses as much as 25MB of RAM, and with just the autodefrag running continually, it uses about a quarter of that amount.

Smart Defrag offers a few extras including a scheduler so you can set it up to only defrag during downtime on your computer. You can set it to run scans on bootup or even have the app shut down your computer when it's done defragging selected hard drives or partitions.

It's important to note that Smart Defrag is not as essential for those running Windows 7 because the OS defrags continually on its own. But if you run external drives connected to a Windows 7 computer, this utility will still come in handy for keeping them running smoothly.

Overall, if you want a quick and solid defrag utility to make your computer run more smoothly, with added options for scheduling and other extras, you should definitely download this program. Both beginner and advanced users will have no trouble operating this solid utility.

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Publisher's Description

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User Reviews
  • Current Version


    out of 186 votes

    • 5 star 90
    • 4 star 81
    • 3 star 8
    • 2 star 4
    • 1 star 3
  • All Versions


    out of 2927 votes

    • 5 star 1448
    • 4 star 1103
    • 3 star 158
    • 2 star 71
    • 1 star 147
  • My rating

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Results 1–2 of 2

1 stars

"IObits, The Installer of Malware"

October 05, 2014  |  By jycnan

 |  Version: Smart Defrag 3


Thinking, give me a few more hours.


Okay, I installed Advanced System Care, due to the fact that Smart Defrag came with and IObits Malware fighter, since C/Net recommended both. Next, my AV started finding Conduit, which I succeeded getting much faster then Spigot. I always go to the last thing installed, which in this case was Advanced System Care. I even emailed IObits, they told me I shouldn't have installed the toolbar it actually states it's from Spigot! I did not, I do not install toolbars.


It is a great program, provided it didn't installed the malware. It took me an week or so to find the source of spigot to get rid of it. I'd delete it, it would come back. I'd delete the IObits extensions, they'd come back.

Personally, I would stay far away from anything by IObits.

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1 stars

"Liked until realizing it's AutoUpdate installs Conduit"

September 14, 2014  |  By MMiller1000

 |  Version: Smart Defrag 3


Have used it for a few years and it seems to work in the background without too much disruption.


I've been wondering why all of the family computers I support and have installed Smart Defrag on have come down with a case of CONDUIT SEARCH I have to install. Just ran the custom update installer and found the source - SMART DEFRAG UPDATE if you choose Default Install it puts this malware on your computer. Tough to remove.


I will start removing it from every computer and will tell all web blog friends to avoid it. They've gone to the dark side.

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Results 1–2 of 2

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Full Specifications

What's new in version 1.45
Version 1.45 improves Defrag Report and interface, and fixes bugs with SSD drives.
Publisher IObit
Publisher web site
Release Date April 20, 2010
Date Added March 30, 2010
Version 1.45
Category Utilities & Operating Systems
Subcategory System Utilities
Operating Systems
Operating Systems Windows 98, Windows, Windows XP, Windows Vista, Windows NT, Windows Server 2008, Windows 7, Windows 2003, Windows 2000, Windows Me
Additional Requirements None
Download Information
File Size 11.71MB
File Name smart-defrag-setup.exe
Total Downloads 18,641,510
Downloads Last Week 3,985
License Model Free
Limitations Not available
Price Free

Previous Versions:

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