Note that boot time defrag is not supported with the portable version and should not be used.

Download, use, and update it absolutely free for your personal computers, business or enterprise servers –– it won't cost you a penny.

Free Defragmenter Forever - Smart Defrag is 100% freeware.

Smart Defrag has a 'Safe Intelligence' technology that can assure the health of your disk by deciding When and How to execute defragmentation.

Data Safe and Reliability Guaranteed - Besides, unlike other 'Automated' Defragmenters, Smart Defrag does NOT constantly perform analysis and defrag, which does damage your hard drive and shorten its life.

Extremely Easy to Use - Its intuitive interface makes Smart Defrag the ideal utility for complete computer novice.

Always-on to Work Automatically - Smart Defrag can be set to work automatically and quietly in the background, so it continually and constantly keeps your computer fragment-free.

It also streamlines your file system, places the frequently used files and directories into the fastest area of the disk, enabling your computer to run at top speed with the most stability.

Optimize Disk Performance - Smart Defrag doesn't just use simple defragmentation.

It's been specially designed for modern, large hard drives, so it eliminates long waiting time.

Exceptionally Efficient Defragmentation - Smart Defrag has the world's fastest defragmenting engine.

Update automatically or install from the portable app store in the Platform. Smart Defrag is a trademark of IOBit and is packaged for portable use with permission. It's freeware for personal and business use.

It's packaged in Format so it can easily integrate with the Platform. Smart Defrag is a powerful disk defragmenter with a fast engine and an easy to use interface. A new version of Smart Defrag Portable has been released.

Iobit smart defrag 6.7