About Smart Defrag
Smart Defrag guarantees you maximum Hard Drive performance highest data access speed.
Smart Defrag is a powerful, dependable, and user-friendly disk optimizer that elevates overall disk performance. It intelligently rearranges files according to access frequency to speed up data access and extend the lifespan of both HDDs and SSDs. Unlike conventional tools that only offer basic defragmentation, Smart Defrag provides customized, in-depth optimization for different disk types, making it a more professional and practical system maintenance solution.
Professional HDD Defragmentation
Powered by IObit's cutting-edge defragmentation engine, Smart Defrag provides comprehensive, high-performance HDD optimization. The tool reorganizes fragmented data and refines file layouts to significantly enhance the read/write speeds and responsiveness of mechanical hard drives. It streamlines complex disk upkeep workflows and delivers a tangible boost to your entire system's operating speed.
Smart SSD Trim Optimization
SSDs have become the mainstream storage for modern PCs, requiring professional maintenance to retain their peak performance and lifespan. Powered by industry-leading SSD TRIM technology, Smart Defrag delivers lossless, intelligent optimization for solid-state drives. It mitigates performance decay, maintains consistent operational efficiency, and prolongs your SSD's lifespanall while keeping all disk data fully intact.
Hands-Free Automatic Disk Optimization
Boot Time Defrag
Gaming Performance Optimization
Real-Time Disk Health Monitoring
What's new:
+ Revamped core defrag engine to deliver faster and more stable disk defragmentation
+ Redesigned Large File Defrag algorithm to minimize disk read/write latency and extend disk lifespan
+ Enhanced Disk Cleanup to reclaim far more valuable storage space effortlessly
+ Full localization support for 42 global languages
+ Fresh Lucky Draw to win free Smart Defrag Pro license keys or exclusive discounts for all IObit software
+ General performance improvements and bug fixes
Previous Versions
Here you can find the changelog of Smart Defrag since it was posted on our website on 2015-04-27 03:00:00.
The latest version is 12.0.0.536 and it was updated on 2026-10-17 21:33:24. See below the changes in each version.
Smart Defrag version 12.0.0.536
Updated At: 2026-08-25
Changes: + Revamped core defrag engine to deliver faster and more stable disk defragmentation
+ Redesigned Large File Defrag algorithm to minimize disk read/write latency and extend disk lifespan
+ Enhanced Disk Cleanup to reclaim far more valuable storage space effortlessly
Smart Defrag version 11.4.0.508
Updated At: 2026-06-12
Changes: + Enhanced the intelligent defrag algorithm to automatically adopt optimal defrag strategies tailored to varied disk media for top-tier performance
+ Optimized Large File Defrag logic to boost disk read/write efficiency and prolong drive lifespan
+ Fixed known software bugs
Smart Defrag version 11.3.0.476
Updated At: 2026-04-10
Changes: + Enhanced compatibility to deliver more stable and efficient defragmentation
+ Updated language files
+ Fixed known bugs
Smart Defrag version 11.2.0.472
Updated At: 2026-01-06
Changes: + More accurate detection of disk types
+ Optimized Smart Analyze to analyze more intelligently, delivering more precise results
+ Improved defragment engine to boost defragment performance
+ Fixed bugs
Smart Defrag version 11.1.0.466
Updated At: 2025-10-21
Changes: + Enhanced Large File Defrag to better defragment large files for faster disk read/write speeds and longer disk life
+ Improved Disk Health to display the data more accurately
+ Optimized defrag strategy to reduce resource usage
+ Fixed known bug
Smart Defrag version 11.0.0.454
Updated At: 2025-07-30
Changes: + More intelligent technology to apply the most proper defrag optimization methods for different disks to achieve the best performance
+ Improved file defrag algorithm for faster access
+ Optimized Free Space Defrag by consolidating large blocks of continuous free space to maximize disk read
Smart Defrag version 10.4.0.441
Updated At: 2025-05-08
Changes: + Smarter algorithm intelligently applies the most appropriate defrag method for different disks to achieve optimal performance
+ Enhanced Disk Cleanup to free up more disk space
+ Optimized Boot Time Defrag for faster startup
+ Fixed known bugs
Smart Defrag version 10.3.0.435
Updated At: 2025-01-14
Changes: + Optimized the logic of Large File Defrag to speed up disk read/write and enhance disk durability
+ Optimized Auto Analyze for smarter analysis and more accurate results
+ New Lucky Draw to win Smart Defrag Pro codes and IObit product discounts
+ Fixed minor bugs
Smart Defrag version 10.2.0.435
Updated At: 2024-11-29
Changes: + Enhanced defrag engine for ultra-fast, stable, and efficient defragmentation
+ Optimized Boot Time Defrag for faster startup
+ More accurate detection of disk types
+ Fixed minor bugs
Smart Defrag version 10.1.0.419
Updated At: 2024-09-10
Changes: + Enhanced Large File Defrag to better defragment large files for faster disk read/write speeds and longer disk life
+ Improved Disk Health to display the data more accurately
+ Optimized defrag strategy to reduce resource usage
+ Fixed known bugs
Disclaimer
External Download
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