Social media buttons


  • 6.2
  • Not bad
  • 40
  • 8
  • Very good
  • Very good
Your rating:
Your rating
  1. 0
Trial version
  • Mac
Latest version:
2.2.4 21/09/12
Last month's downloads:
16.3 MB

iDefrag is fully compatible with:

  • Mac OS X

You'll also need:

Minimum requirements
Others: Mac OS X 10.5.3 or later
iDefrag is also compatible with

Available languages

  • English

Versions of iDefrag

All versions of iDefrag
Version License Language O.S. Download
iDefrag 2.2.4 21/09/12 Trial version English
  • Mac OS X
iDefrag 2.0.5 28/03/13 Trial version English
  • Mac OS X
iDefrag 1.6.8 19/06/13 Trial version English
  • Mac OS X

Did you know about a new version? Tell us

Let me know when a new version is available and add this program to my favorites



Defrag and optimize your hard disk with ease

James Thornton

Recent changes

  • Improved error message when Quick (on-line) algorithm encounters Time Machine backups.
  • Some accessibility improvements.
  • Fixed running on 10.5 and some 10.6 configurations.
  • Fixed a crasher that you could get if you tried to create a recovery disk on certain disks.
  • Fixed a hang that could occur in some rare error scenarios.
  • Fixed a farily rare hang that you could get whilst running in the exclusive restart mode.

Review last updated: 21/09/12

Even if you aren’t interested in defragmenting your hard disk, if you produce products on CD-ROM disks, iDefrag will be of use. Seek times on CD-ROM and DVD-ROM disks are many times slower than those of hard disk mechanisms, so fragmentation really hits performance, in some cases adding many minutes to read times. iDefrag can defragment disk images before they are burnt onto CD or DVD-ROM, optimizing access time and significantly reducing install or read times.

And, unlike other products, iDefrag provides a wealth of information about your files, so you can see which ones are most fragmented and even look where they are on the disk. The screenshots on this page are from a perfectly normal 120GB hard disk, installed in a PowerMac G4 that is used for software development, wordprocessing and other everyday tasks (writing this web page, for instance). Look how fragmented it has become; most of that is actually down to one or two large files—like /usr/bin/emacs, shown on the right, with 96 fragments—but there are a substantial number of less fragmented files, over 3,000 in fact.

What do you think about iDefrag?

Your avatar
All opinions
Download iDefrag

Top Downloads: Analyzers & Optimizers

  • United States
  • Global
  1. Run Windows programs on your Mac

Articles iDefrag

Discover alternatives to and add-ons for iDefrag

Alternatives to iDefrag

iDefrag iDefrag

  • 8
  • 8
  • 6.2
  • 6.2

Addons for iDefrag

  • iDefrag doesn’t have any addons yet. Would you recommend any to us? Tell us