Smart Defrag Free Download

by IObit

Average Rating
out of 288 votes

Smart Defrag is an ultra-fast, stable and reliable Disk Defragmenter utility with over 7 million users. It consolidates free space using an efficient multi-threaded defragmentation technology which results in improved file copy speed and faster game launching time.

In order to speed up boot time, Smart Defrag safely moves system boot files which typically cannot be moved while Windows is running. The result is up to a 100% improvement in PC startup time. One of the best features is Automatic Disk Defrag option, a which reserves defrag time for when your computer is idle. Smart Defrag's scheduler function allows defrags to be set up regularly, or even set to defrag when your PC is plugged into a power source, ot when CPU usage is below a certain threshold.

Windows 10, Windows 8, Windows 7, Windows Vista and Windows XP are all supported, including 32-bit and 64-bit versions.

We always recommend backing up your system before performing any software or driver updates. Smart Defrag does not provide a backup or restore point feature baked into the utility.

We recommend Smart Defrag as a premier Windows Disk Defragmenter utility.

Smart Defrag Technical Specifications

Title Smart Defrag
Version 5.8.5 (latest)
Size 15.9 MB
Requires Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP
License Freeware
Downloads 34,974
Author IObit

Publisher Description

Smart Defrag is a reliable and intelligent Disk Defragmenter utility. Disk fragmentation is generally the main cause of slow and unstable computer performance. In order to accelerate hard drive for faster data access and outstanding disk performance, Smart Defrag provides efficient defragmentation technology to hard drives and SSD by multi-threading defragging at the same time, consolidating free space and large files defragging.

The Boot-time Defrag feature of Smart Defrag allows you to customize defrag specified files in system boost time. Smart Defrag also optimizes your disk by intelligently streamlining your files based on using frequency.


  • Safe & Automatic Disk Defrag
  • Higher File Access Speed
  • Up to 100% Faster PC Startup
  • SSD Trim Functionality
  • Gaming Defrag
  • Automatic Defrag During System Idle Time
  • Scheduled Defrag for Regular Defrag Times
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