-
Less Fragments, Faster Disk Drive
- Disk fragmentation is one of most common reasons for slow computer. With less fragments, your computer will be faster to access files, boot up and load games. IObit Smart Defrag can automatically analyze your disk for fragments and enables you various methods to defrag drivers, files, folders and games. Besides Smart Defrag, you also have defrag methods such as Fast Defrag, Defrag and Optimize, Large File Defrag, Free Space Defrag, and Defrag & Prioritize Files. By clicking the Smart Defrag button, IObit disk optimizer will analyze your disk drives at first, and then use the most suitable defrag method to defragment fragments automatically.
- Auto Analyze: Scan your disk drives when your system is idle and inform you.
- Auto Defrag: Automatically perform defragmenting when fragment rate reaches at a specified value, using the specified defrag method.
- Supports HDD and SSD. The latter requires trimming instead of defragging.
-
Boot Time Defragmenting
- Generally, system files, registry files, page files, hibernation files, MFT (Mast File Table), cannot be defragmented when the system is running. However, with Boot Time feature, you're able to defrag these files before system startup. Get Smart Defrag to speed up PC boot time at once.
- Defrag MFT, page files and hibernation files for free.
- Defrag registry files and system files (PRO version required)
- Add specified files to be defragmented while system is running.
-
Built-In Game Booster for Free
- IObit Smart Defrag is a very good choice if you're a veteran gamer. It gives you a helpful game booster to decrease load time of specified games by defragging game files. Simply add your desired games to the list and you're done. Smooth game experience guaranteed.
- Supports any PC games.
- No limit on quantity of games.
- Get professional game booster with more features if needed.
-
More Tools for Peak Disk Performance
- Different from usual disk defragment tools, IObit Smart Defrag not only equips with industry-leading multi-threading defrag engine, but also includes useful tools like disk cleaner, disk health indicator and UI customization.
- Disk Cleanup
- Junk files might slow down your computer. Use the built-in disk cleaner to remove temp files, log files, error files, Windows update caches, etc.
- Disk Health
- Disk metrics like temperature, usage, write speed, read speed, and disk self-monitoring analysis report will be displayed in real-time.
- Custom UI
- You're able to change skins for this disk optimizer and customize the map color, including fragments, free space, master file table, and so on.
-
Compare IObit Driver Booster FREE with PRO
- IObit Smart Defrag FREE is usually enough to do basic defragmentation. You can even replace Windows Disk Defragmenter with Smart Defrag as the default disk defragmentation tool in the Settings panel. Get the PRO version if you find it necessary to do better disk defragging automatically.
Choose the best disk optimizer for Windows and Mac |
Smart Defrag FREEFree Download |
Smart Defrag PROFree Download |
| Windows Disk Defragmenter | ||
| One click to defrag your disk drives intelligently |  |
 |
| Make a schedule plan to do disk defragging | |
|
| Auto defrag your disk based on specified fragment rate and idle time. |  |
|
| Auto analyze your disk drives and suggest suitable defrag methods | |
|
| Disk and PC Performance | ||
| 2X faster file access speed | |
|
| Smoother gaming experience | |
|
| Windows boot time speed up | |
|
| Faster and more stable data copy and transfer | |
|
| Auto defrag selected files and disks | |
|
| Platinum Services | ||
| Automatically update to the latest version of disk optimizer | |
|
| Free and professional 24/7 technical support | |
|
| Note: For Mac users, please download MacBooster which comes with lots of disk tools for macOS 10.9 or later (compatible with macOS 11 Big Sur). | Free Download | Free Download |
IObit Disk Optimizer FREE