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Version History

v2.22.995 (22 May 2018)
  • Fixed a bug that caused a scheduled defrag to fail silently
  • Improved SSD detection for newer SSD devices
  • Improved SSD detection for laptops
  • Added new Privacy menu Installer
  • /L (list) switch now highlights SSDs
  • Added a warning when attempting to defrag SSDs
  • Added switch for forcing defragmentation of SSDs
  • Fixed text cutoff on the 'Defrag' button in Dutch
  • Fixed text bleeds in the installer for German and other languages


v2.21.993 (16 Mar 2016)
  • Improved Analysis and Defrag performance
  • Improved memory usage and management architecture
  • Optimized 64-bit builds on Windows 8 and 10
  • Improved update checking process
  • Updated exception handling and reporting
  • Improved localization and language support
  • Minor GUI improvements - Minor bug fixes


v2.20.989 (19 Jan 2016)
  • Improved SSD Optimize and Quick Optimize
  • Improved Windows 10 support
  • Optimized moving Files or Folders to end of drive
  • Updated crash reporting architecture
  • Optimized remaining time and benchmark calculations
  • Minor GUI improvements - Minor bug fixes


v2.19.982 (11 Mar 2015)
  • Added move Files or Folders to end of drive
  • Improved SSD Optimize and Quick Optimize
  • Added new scriptable /CHECKERRORS parameter to check drive for errors
  • Added option to disable auto Benchmark after Defrag
  • Improved localization support
  • Minor GUI improvements
  • Minor bug fixes


v2.18.945 (16 Apr 2014)
  • Added Disk Performance graphs to Statistics tab
  • Added Quick Optimize for SSD
  • Added ability to view information for different drives when an operation is in progress
  • Improved Health tab loading speed
  • Added new scriptable /UPDATE parameter for background updates. (Defraggler Professional only)
  • Improved detection of files without extensions in File list tab
  • Minor GUI improvements
  • Minor bug fixes


v2.17.898 (06 Feb 2014)
- Added New Statistics tab - Added Intel, Plextor, Micron and OCZ SSD optimization - Added progress information to tray tooltip - Improved time remaining calculation - Enhanced Freespace Defrag procedure - Improved memory usage - Optimized benchmarking algorithm - Added Indonesian translation - Minor GUI improvements and bug fixes

v2.16.809 (22 Oct 2013)
- Added Windows 8.1 support - Added SSD optimization for Windows 8 - Added Samsung and JMicron SSD TRIM optimization - Enhanced Solid State Drive detection accuracy - Added additional SMART data to Health tab - Improved search procedure for finding small files - Updated translations - Minor GUI improvements - Minor bug fixes

v2.15.742 (18 Jul 2013)
- Optimized performance of Analyze and Defrag on all OSs - Improved Context Menu defrag features - Added File Type and Last Modified Date columns to the File List - Added progress information to Boot-time Defrag - Improved handling of locked and read-only drives - Improved management of unmounted drives - Added additional drive information - Minor GUI improvements and bug fixes

v2.14.706 (23 Apr 2013)
- Added Freespace Defrag to scheduler - Added single-click analysis of multiple drives - Added support for UDF file systems - Improved searching with wildcards - Improved shell extension on 64-bit systems - Improved GUI navigation - Fixed minor bug in the monthly scheduler - Minor improvements and bug fixes

v2.13.670 (18 Feb 2013)
- Added Quick Defrag scheduling - Added Fragmentation Threshold to scheduled defrag options - Added option to close Defraggler after defragmentation is complete - Added support for 3TB external drives - Added support for drives with allocation units greater than 4KB - Added support for ReFS file systems - Updated translations - GUI and usability improvements - Minor bug fixes

v2.12.628 (12 Dec 2012)
- Added Windows 2012 Server support - Added support for drives mounted as NTFS junction points - Scheduled defrags can now be prevented if specific processes are running - Improved placement of fragments larger than 100MB - Added advanced crash reporting - Updated translations - GUI and usability improvements - Minor bug fixes

v2.11.560 (17 Oct 2012)
- Added support for Windows 8 - Added Minimize to Tray - Added right-click Move File to end of Drive feature - Improvements to Free space calculation - Fixed exclusions in df.exe - SSD drives are now handled correctly when drives are queued for defrag - Improved drive map block calculation for very small drives - Shortcuts are now correctly interpreted when calculating fragmentation levels - Improved support for /minpercent parameter for df.exe - Minor GUI improvements - Minor bug fixes

v2.10.424 (24 May 2012)
- Defragmentation speed improved by up to 30% - Optimized free space algorithms - Re-architected scheduling manager - Improved the fragmentation calculation during Defragmentation - Fixed keyboard support for scheduler - Minor UI tweaks

v2.09.391 (23 Jan 2012)
- Added Defrag Time Remaining - Improved formatting of Smart data - Smart data can now be copied - Updated support for McAfee Endpoint Encryption - Performance improvement on Windows 8 - Improved accuracy of SSD detection - Improved unicode support for export file list - Fixed issued that caused the Benchmark button to disappear - Benchmarking info is now included in the export file list - Improved usability in Options dialog - Added Latvian language - Minor bug fixes and tweaks

v2.08.373 (14 Nov 2011)
- Added Disk and File benchmarking - Added Volume Shadow Service (VSS) compatible mode - Improvements to disk health tab - Added Real Value information to SMART data - Health tab now supports Fahrenheit - Improvements to SSD detection - Minor fixes to scheduler stop commands - Minor defrag algorithm improvements - Translation fixes

v2.07.346 (13 Sep 2011)
- Added Drive Health information - Improved detection of SSD drives - Improved scheduler when the computer is idle - Fixed unnecessary creation of scheduler.his files - Improved uninstallation of shell commands - Fixed issue that could cause GDI leak in the Options dialog - Several small stability fixes for Windows 7 - Macedonian language added - Minor bug fixes and improvements

v2.06.328 (08 Jul 2011)
- Added advanced options to schedule (timeout, idle time) - Fragmentation calculation can now be customized - Improvements to file placement algorithms - Defraggler can now be assigned as the default defrag tool for Windows - Added enable/disable shell extension - Fixed issue that could cause df.exe to abort unexpectedly - Scheduler now displays the time it last ran - Improvements to non-English translations - Fixed incorrect tab-stop order in scheduler dialog - Added support for Kurdish language - Minor bug fixes and improvements

v2.05.315 (19 May 2011)
- Improved defrag speed of large files in 32-bit OSs - Improved drive analysis speed - Improved Solid State drive detection - Fixed bug with incorrect position of Defraggler item in file/folder context menu - Added option to enable/disable shell extension - Fixed problem with df.exe sometimes aborting - Fixed file type exclusion bug - Added support for the Kurdish language - Added last scheduled defrag information - Shell extension fixed to work correctly with UAC - Translation fixes - Online Help link fixed - Minor bug fixes

v2.04.297 (14 Apr 2011)
- Added Windows Explorer extension for analysis and defrag - Added option to shutdown the system after finishing a scheduled task - Added minimum drive fragmentation percent parameter "/minpercent" to df.exe - Improved 64-bit drive analysis speed - Added missing strings to translations - Minor bug fixes

v2.03.282 (14 Mar 2011)
- Added support for Windows 7 SP1 - Improved file shuffling algorithm (allows Defraggler to move files out of the way) - Vastly improved the speed of the file list for FAT drives - Faster start/stop processes for FAT drives - Improved support for low RAM situations - Drive map block size can now be updated dynamically - Fixed bug that could cause shutdown to fail with Freespace Defrag - Improved results in Search tab when 'Include non-fragmented files' is checked - Better support for very long non-English strings - Better keyboard support in the File List - You can now navigate tabs using Ctrl-Tab - Improved support for non-standard Windows colors - New extensions to be moved to the end of the drive are now checked by default - Better handling of delimiters in exclude list - Minor tweaks and fixes

v2.02.253 (01 Feb 2011)
- Improvements to speed and accuracy of the search algorithm - Redesigned NTFS processes for optimized speed and memory - Improved event handling with Windows 7 - Improved scheduling for non-admin users - Fixed issue that caused drive icons to disappear from the drive list - Fixed issue that caused the Analyze button to be incorrectly drawn during long tasks - Improved handling of long non-English strings in options dialog - Fixed issue with fragmentation percent when drive contains sparse files - Moved about dialog to a separate window - Improved error logging in Windows 7 - Minor GUI changes and tweaks - Minor bug fixes

v2.01.239 (21 Dec 2010)
- New Scheduler - Set a defrag on login, idle or specific intervals - Improved memory use on Windows 7 with lots of files - Improved placement of large files on exFAT - Improved caching of column sort options - Fixed prompt when attempting to empty the recycle bin on Vista 64 - Added link to online docs (Help > Online Help) - Added hot-key for Quick Defrag - Minor bug fixes

v2.00.230 (10 Nov 2010)
- Added offline defragmentation of system files during boot process - New Drive Map with custom colors and styles - New improved defragmentation engine - Improved Windows 7 compatibility - Lots of minor GUI improvements

v1.21.209 (02 Aug 2010)
- Added Free Space defrag to the command-line app - Internal library updates - 64-bit compiler optimizations - Fixed the flicker on the main window tabs - Changed internal links to piriform.com/defraggler - Improvements to translations

v1.20.201 (21 Jun 2010)
- Improved drive map updating - Improved 64-bit memory addressing - Improved Quick Defrag file algorithms - Improved handling of Windows styles - Fixed bug with MFT buffer zone - Added prompt on exit when long tasks are running - Many improvements to UI when using non-English - Added Georgian translation - Minor stability fixes

v1.19.192 (19 May 2010)
- Added queueing of multiple drives - New option to disable caching of drive analysis data to improve memory usage - Improved placement of files in Quick Defrag algorithm - Improved Windows 7 support - Lots of other small tweaks and fixes

v1.18.185 (05 Apr 2010)
- Optimized and bug fixed defrag with large numbers of small files - Optimized 64-bit memory usage - Drive map is no longer blocked by background operations - Simplified the drive map highlighting to make it faster and more memory efficient - Fixed control sizes on file search form - Fixed issue with exclude files dialog - Fixed a few missing translations - Fixed bug displaying filenames containing ampersands - Improved memory leak detection mechanism - Lots of minor bug fixes

v1.17.172 (15 Feb 2010)
- Improved Windows 7 support - Rearchitected memory management on Vista/W7 - Improved handling of scheduled tasks - Fixed Vista redraw issue with the search box - Improved button size and placement for non-English translations - Added support for wildcards in the search feature - Lots of other little tweaks and fixes

v1.16.165 (04 Jan 2010)
- New native 64-bit EXE - Defrag engine improvements to take advantage of 64-bit code - Fixed Vista and Windows 7 repaint issue when language was changed - Improved moving routine for small orphaned files - Added support for Danish, Slovak, Chinese (Simplified) and Vietnamese languages - Lots of small tweaks and improvements

v1.15.163 (04 Nov 2009)
- Redesigned disk space usage pie chart - Windows 7 support added - Added Portable U3 installer support - Improved numerical and text validation - Fixed bug in automatic update checking - Many GUI fixes and improvements

v1.14.159 (02 Oct 2009)
- Added 'Empty recycle bin option' before defrag - Improved placement of files around MFT - Fixed incorrect defrag button behavior (defrag checked and highlighted while using tabstop) - Fixed crash occurring after pressing defrag button - Fixed tab order on cleanup drive dialog - Added Run Defraggler option after installation - Added Estonian support

v1.13.155 (17 Aug 2009)
- Added quick defrag to command line version - Added option to view folder index entries in file list - Fixed bug related to excessive GDI objects - Fixed tab issue in search tab - Improved speed of moving very large files to the end of the drive - Several minor bugs fixed

v1.12.152 (22 Jul 2009)
- Added Quick Defrag feature - Added exFAT compatibility - Architecture changes to improve defrag performance - Improved placement of most commonly used files - Various UI tweaks

v1.11.148 (22 Jun 2009)
- Added custom drive map colors (Options > General > Interface) - Fixed schedules for multiple drives - Fragmented info is now displayed in df.exe - 'Large files' can now be excluded from freespace defrag (Options > Defrag > Advanced) - Improvements to the way crash data is collected - Various minor UI tweaks - Several minor bugs fixed

v1.10.143 (11 May 2009)
- Added file exclusion feature - Added detection of Solid State Drives - Added "Include non-fragmented files" checkbox to file search - Improved interactivity of search - Fixed problem that could allow df.exe and Defraggler.exe to run at the same time - Fixed rare crash while reanalyzing - Minor GUI text changes - Minor bug fixes

v1.09.138 (13 Apr 2009)
- New search feature - Various tweaks to the drive list - Improvements to freespace calculation when moving large files - Improved handling of of sparse files - Lots of minor UI tweaks

v1.08.132 (16 Mar 2009)
- Improved handling of NTFS compressed files when moving to end of disk - Added /shutdown option to df.exe - Added /large file option to df.exe - Drive list now includes a % fragmented column - Blank file types no longer allowed in Large file options - Warning when trying to set a schedule in the past - Right click 'Check this' option is now greyed correctly - Various small UI tweaks

v1.07.124 (03 Feb 2009)
- Added Shutdown after Defrag option - Improved Interactive Drive Map response in Vista - Language DLLs now stored in /lang folder - Program startup speed improved - Architecture changes to improve defrag performance - Minor tweaks to main UI - Several minor bug fixes

v1.06.118 (12 Jan 2009)
- Added interactive drive map - Improved scheduler handling of multiple drives - Fixed rare crash in Vista when defragging Folder entries - Optimized file placement for Win2k3 - Improved placement of large files at end of drive - Added Dutch, Ukranian and Norwegian translations - Various UI tweaks - Several minor bug fixes

v1.05.111 (05 Dec 2008)
- Added 'Move files to end of drive' feature - Added 'Save settings to ini file' option - Added French, Croatian, Chinese Traditional, Catalan, Bulgarian and Turkish translations - Fixed rare crash under Vista that could happen when using menus - Improvements to debug logging routines - Various small UI tweaks

v1.04.098 (29 Oct 2008)
- Multi-language release (16 new languages!) - Improved handling of daily schedules - Fixed bug that could file defrag to be very slow - Improved logging of analysis methods - Loads of performance improvements - Loads of bug fixes

v1.03.093 (01 Oct 2008)
- Added support for multiple languages - New options dialog - Added scheduler - Fixed display of labels for removable drives - Added support for tabbing between sections - Loads of performance improvements - Minor bug fixes

v1.02.085 (01 Sep 2008)
- Improved progress indicator accuracy - Added checks for freespace - Various GUI and usability improvements - Fixed UI issues with large DPI settings - Fixed 64-bit compatibility issue that would ignore some files - Improved drive map (defragged files are now always marked as blue) - Added background update checking - Fixed minor bug in progress indicator for chkdsk - Minor bug fixes

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