5 Best Free Disk Defrag Software 2019

1. Piriform Defraggler by CCleaner

Defraggler by CCleaner is the best free defragment software that defrags entire hard drive & individual files. It works with HDD and SSD drives & supports FAT32 and NTFS file systems.
Defraggler support boot time defrags, check to drive error and health, empty recycle bin features.



  • Schedule defragment
  • Defrag specific files & folders
  • Defrag HDD during reboot
  • Check drives Health



  • No registry scan option
  • Doesn’t support idle defragment

2.Glarysoft Disk SpeedUp

Glarysoft Disk SpeedUp another best free defragment tools for windows that can defrag whole hard drive & individual files and folders. You can easily select or exclude specific files & folders before running the defragment.
Disk SpeedUp comes with inbuilt disk doctor it checks the files and drive error and fixes them. In addition to its scanning abilities, Disk SpeedUp can run a boot-time defrag, analysis files and drives, schedule defragments daily/weekly/monthly and automatic shut down PC after complete defragment.
Easy to install and totally free
Support boot time defragments
Defrag when system idles
Support schedule defragmentation
Doesn’t support removable drives
Duplicate file finder option not available
Not integrate with Windows Explorer

3. Smart Defrag

Smart Defrag is a free, lights and powerful defragmenting tool that organize your files and folder & increase hard drive performance.
Iobit smart defrag supports running a schedule defragment as well as boot time defragment. It can exclude files & folders from analysis and defrag.
Automatic schedule defragment
Boot time defrag
Can exclude files & folder
Clear temp files & cache
Gaming defrag
Can’t auto defrag when the computer is idle

4. Auslogics Disk Defrag

Auslogics Disk Defrag is a freeware high-performance fast defragmentation tool that helps your system performance.
It supports advanced disk optimization techniques, which will speed up your computer by reducing fragmentation in your storage drive and moving system files to faster segments of your disk.
Schedule defragmentation
Customize disk defrag
Defragging while the system idle
Unable to move files to end of the hard drive
No option for optimizing SSD

5. O & O Defrag free edition


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