Smart Defrag is a FREE disk defrag tool that provides extremely fast and efficient defragmentation to your hard drives intelligently for faster file loading and high disk performance. With "install it and forget it" feature, Smart Defrag 2 works automatically and quietly in the background on your PC, keeping your hard disk running at its top speed. This powerful, award-winning free disk defragmenter is 100% safe and clean with no adware, spyware, or viruses.
Using IObit's latest disk defrag engine and the new "Boot Time Disk Defrag" technology, Smart Defrag 2 has not only the world's fastest defragmenting speed but also the most advanced defragmenting ability. It's been specially designed for modern, large hard drives including SSD(solid state drive) defrag, which eliminates the long waiting time.