- Support Center
Free Online Tools
Turn on iTop VPN to safeguard online privacy, remove ads, and protect DNS with military encryptions.
Jump on the couch, open iTop VPN, and watch unlimited streaming contents on Netflix, HBO, Disney+, etc.
Download iTop VPN to bypass geo-restrictions, speed up, to enjoy peak game experience.
Don't miss it!
Disk fragmentation is the main cause of slow computer. With enhanced multi-threading defrag engine and improved defrag speed, Smart Defrag provides better solution for faster data access and outstanding disk performance. Then you can enjoy faster game launching speed, copy files in half the time, etc.
As your computer getting older, it takes longer to startup your computer and begins to work. Smart Defrag helps fix this problem easily. Configuring Boot Time Defrag feature, those files on HDD that cannot be moved while system is running can be quickly defragmented for faster startup.
Nobody wants to experience long game load time. Game Optimize in Smart defrag can optimize your game experience quickly with ultra-fast engine, and all you need to do is select the game you’d like to defrag.
As effective defrag software, Smart Defrag helps speedup PC and data access speed. And now it gets even better with all the new updates below.
New Defrag Engine supports multithreading for ultra-fast, stable and efficient defrag.
Defragment large files to accelerate disk read/write speed and enhance disk durability.
Monitor the disk status in real-time: Temperature, Usage, Self-monitoring analyze report, etc.
Intelligently apply the most suitable defrag/optimize method for different disks to reach top performance.
"IObit Smart Defrag optimizes your PC to take full advantage of SSD performance while defragmenting your hard disks. Its SSD Trim tool automatically enables system tweaks that typically require experience to apply. Smart Defrag's updates include a new defrag engine, specialized Game Defrag, a cool new look, and many more language options (35 and counting)."Cnet
"I have been using Iobit products for a good many years now. Because I am running an older machine with 6 drives, including 2 external, I find that Iobit's "Smart Defrag 8 Pro" has served me very well. Being an older machine,, my computer system tends to become fragmented quite easily. Having My "Smart Defrag 8 Pro" set to auto defrag, and running a "Defrag and Optimize" once a week, keeps my system running smooth and well. Iobit is constantly upgrading and striving to make the product even better as time goes by. I am well pleased with this product."William Howes
"I run a combination of RAID 0 SSDs and RAID 0 HDDs and use Smart Defrag Pro to analyse, defrag and keep my drives running at peak performance. As with all IObit software it is easy to install, use and very reliable. Just set it up and forget it. Smart Defrag has a very small memory foot print so it won't slow down your system. Definitely recommended!"Edward Lee Ah Yen
"I use Smart Defrag since its creation on several PCs and from the beginning with the members of my computer club we were able to see the continuous improvements. It was perfect for them, except the English language. So I invested for IObit in the French translation. From now on, the French IT magazines strongly recommend Smart Defrag, including with Windows 10 Optimiser, for a more robust and accurate diagnosis with options to speed up the system startup."Roland LALIS
"I don't know how I could be more satisfied with Smart Defrag v8. It works like a charm everytime, and all I have to do is run the program and everything is clean and I'm absolutely 100% satisfied, not only with the program, but also with the quick reply when I needed advice on how to manage the problems I might have had. That I appreciate very much."Jim Parten