What's new?
Version 4.1.2: Released on 18 Jan 2018
·Bugfix: When scanning a WebDav directory filenames may have been shortened and unexpected loops could have occurred. TreeSize Free now scans WebDav directories as expected again.
·Some servers with Samba 3 have been recognized falsely as Windows Server. It is now possible to scan shares on such servers using TreeSize Free, as long as it is not executed within a Windows domain.
·Under very specific circumstances the user interface of TreeSize Free could have been shown unexpectedly partly in German. This issue has been fixed.
·Bugfix: Several minor bug fixes and improvements have been incorporated.
Version 4.1.1: Released on 08 Dec 2017
·The long tooltip has been restored as the default tooltip type. You may now select your preferred tooltip type, including the new content preview introduced with V4.1, directly on the Options tab.
·Bugfix: The directory tree is now properly resorted after deleting files and folders.
·Bugfix: An unhandled exception, which may occur when deleting files, has been fixed.
·Bugfix: On Windows 7, TreeSize Free ran into an error, when minimizing the window during a running scan. This issue has been fixed.
·Bugfix: Several minor bug fixes and improvements have been incorporated.
Version 4.1: Released on 14 Nov 2017
·TreeSize Free now allows forward and back navigation among the recently selected items.
·The extended filter mechanism now allows hiding empty folders from view.
·Folders and files that are compressed by the new compression methods of Windows 10 are now analyzed correctly by TreeSize Free.
·A new type of tooltip was introduced, which shows a preview of the content of the currently hovered-over element.
·The position of the treemap chart can now be switched to the bottom of the window. This increases the available space for details columns, with the treemap chart shown in parallel.
·TreeSize Free can now include a separate tile for the free space of a local drive in the treemap chart.
·The performance has been improved further when scanning a local drive or folder, or a remote location.
·Bugfix: Using the Windows Explorer's context menu for a mobile device to run TreeSize Free should now start the scan for the device as expected.
·Bugfix: Corrected the storing of the selected sorting. The sort direction should now be applied as intended.
·Bugfix: Several minor bug fixes and improvements have been incorporated.
Version 4.0.3: Released on 15 May 2017
·Bugfix: As with previous versions of TreeSize Free, the date of last modification of a folder now represents the date of last modification of all of its contained elements again.
·Some minor improvements and bug fixes have been incorporated.
Version 4.0.2: Released on 28 Apr 2017
·Bugfix: When using the ribbon interface TreeSize Free occasionally froze and didn't respond, or showed up a message saying TreeSize Free ran out of memory. This issue has been fixed.
·A few users prefer the toolbar user interface of v3 over the modern ribbon interface. To get back the old user interface, you may now run TreeSizeFree.exe once with the command line option: /UseRibbonUI false. More information about this topic is available in our knowledge base at http://www.jam-software.com/knowledgebase/7085
·Some minor improvements and further bug fixes have been incorporated.
Version 4.0.1: Released on 03 Apr 2017
·Bugfix: Custom settings made to the ribbon menu are now persisted and restored on next start of TreeSize Free.
·Bugfix: The portable version will no longer create an entry in the Windows Explorers' context menu by default. Users can still activate the context menu entry on the "Options" Tab
·Some minor improvements and further bug fixes have been incorporated.
Version 4.0: Released on 27 Mar 2017
·TreeSize Free now offers the hierarchical treemap chart known from TreeSize Professional. It will help visualize data distribution on your system.
oYou can activate the treemap using the Show Treemap button on the View tab.
oCustomize the treemap charts view to focus on relevant information. On the Treemap ribbon tab you can define a level of detail and select which elements will be included.
oYou can interact with the chart: Use the mouse wheel to zoom, double click to navigate to the selected folder, or simply hover over an element to show detailed information.
·TreeSize Free now uses the ribbon interface known from other applications like the Windows 10 Explorer or MS Office.
·TreeSize Free is now available via the Windows Store, replacing TreeSize Touch.
·TreeSize Free now uses a modern UWP-style layout for the touch-optimized UI.
oOverlay menus and the new "Options" dialog increase the usable workspace.
oThe touch-optimized UI will now present itself windowed and can be moved/resized like other store apps for Windows 10.
oThe recently scanned paths are now available on the touch-optimized UI.
·The scaling for displays with high DPI values for both, classic and touch-optimized UI has been improved.
·The scan performance of mobile devices has been increased significantly.
·TreeSize Free now supports selecting multiple elements in the directory tree for mobile phones and cameras.
·Bugfix: Corrected the column layout in printed reports. It should now use the available size of an A4 page with portrait format.
·Bugfix: Several minor bug fixes and improvements have been incorporated.
·Please note: The support for Windows XP has been dropped. We provide the stable version for TreeSize Free V3.4.5 for Windows XP users.
·Please note: Since the U3 group has cancelled the system's development in June 2010, the support for U3 USB sticks has been dropped. If you require a portable installation, please select the ZIP file TreeSize Free Portable from our download section. This file will run directly from the USB device and does not require the U3 Launchpad.
Version 3.4.5 Released on 16 Feb 2016
·Bugfix: Resolved a display issue where the position of a column could change if a folder was expanded.
·Bugfix: The status bar now shows correct percentage values again.
·Bugfix: Fixed an issue where the column header would not refresh if the user interface was switched between "size" and "percent".
·Bugfix: Entry "Rename" re-added to context menu.
·Bugfix: Several minor improvements and further bug fixes have been incorporated.
Version 3.4.4 Released on 07 Jan 2016
·Users can now send feedback via the "Help" menu.
·Bugfix: TreeSize Free occasionally froze while scanning and didn't respond. This issue has been fixed.
·Bugfix: TreeSize Free no longer shows "Decompress" in the context menu of Sparse files as long as they are not also NTFS compressed.
·Bugfix: Several minor improvements and a few minor bug fixes have been incorporated.
Version 3.4.3 Released on 30 Nov 2015
·The directory tree's line height will now work when the view is zoomed (125%).
·Bugfix: The directory tree is sorted correctly again after a scan has finished.
·Bugfix: TreeSize Free occasionally froze while scanning and didn't respond. This issue has been fixed.
·Bugfix: Several minor improvements and a few minor bug fixes have been incorporated.
Version 3.4.2 Released on 05 Nov 2015
·Bugfix: An error that occured during drag-and-drop-operations has been fixed.
Version 3.4.1 Released on 04 Nov 2015
·Bugfix: If a file or folder is deleted outside the application, TreeSize Free won't crash on file operations any longer. Invalid elements are now removed from the directory tree.
·Bugfix: A context-sensitive help is available in the "Filters" dialog.
·Bugfix: The status bar updates itself correctly while scanning.
·Bugfix: Several minor improvements and a few minor bug fixes have been incorporated.
Version 3.4 Released on 12 Oct 2015
·TreeSize Free now supports scanning smartphones and mobile devices connected to the computer.
·Added support for one-click scans of local Dropbox, Google Drive and Microsoft OneDrive folders.
·TreeSize Free no longer requires a restart when switching to the touch-optimized user interface.
·Tablet mode in Windows 10 can be detected (optional). TreeSize Free will automatically switch to the matching user interface.
·The touch-optimized user interface now provides a context menu for files and folders.
·Users can now select a printer in the touch interface.
·The performance while expanding folders has been increased.
·Bugifx: long lasting operations can be canceled now.
·Bugfix: Column information are persisted correctly when restarting TreeSize Free as administrator.
Version 3.3.2 Released on 26 Mar 2015
·Bugfix: If several items are selected displaying the context menu no longer causes an error.
Version 3.3.1 Released on 24 Mar 2015
·Bugfix: The stability of the search in the directory tree has been improved.
·Bugfix: An error occurring while reading the MFT (Master File Table) on some drives has been fixed.
·Bugfix: Clicking into whitespace no longer selects items in the new touch-optimized user interface.
·Bugfix: Several minor improvements and a few minor bug fixes have been incorporated.
Version 3.3: Released on 16 Feb 2015
·TreeSize Free provides a touch-optimized user interface as an option for Windows 8.0 and higher.
·The scan performance on local NTFS drives (especially on SSD drives) has been increased.
·The total size of selected items in the Directory Tree is now displayed in the status bar.
·Bugfix: Several minor improvements and a few minor bug fixes have been incorporated.
Version 3.2: Released on 30 Sep 2014
·TreeSize Free now scans network drives (except Windows servers and network drives within a Windows domain).
·Bugfix: After deleting a file using SHIFT+DEL the directory tree is now updated correctly again.
·Bugfix: Several minor improvements and a few minor fixes have been incorporated.
Version 3.1.1: Released on 01 Sep 2014
·Bugfix: Sometimes the scan of a local NTFS drive lead to unexpected errors and the scan could not be processed correctly.
·Bugfix: Updating a single directory in the directory tree no longer refreshes the complete scan.
·Bugfix: Deleting a folder using the DEL now works again on machines running Windows Vista.
·Bugfix: The toolbar no longer flickers when resizing the window.
Version 3.1: Released on 12 August 2014
·TreeSize Free supports selection of multiple files now, e.g. to delete or move them.
·Users can now search for folders in the directory tree.
·Entries in the "Options" menu have been categorized.
·To always run TreeSize Free with administrator privileges, simply select "Always start this application as administrator" under "Options > Application".
·Several minor improvements and a few minor fixes have been incorporated.
Version 3.0.1: Released on 03 Apr 2014
·The column layout in printed reports has been rectified.
·Bugfix: [Files]-item on top level is displayed again.
·Bugfix: After deleting files via the context menu or the DEL key, the directory tree will be refreshed automatically.
Version 3.0: Released on 10 Mar 2014
·TreeSize Free can now be switched to a column mode, in which it shows more detailed information about each file and folder.
oYou can toggle between the new and the classic view using "Show Details" in the "View" menu or the corresponding button in the toolbar.
oYou can show or hide columns by right-clicking on the column header.
oYou can sort the directory tree by the information in each column by clicking on the column header.
oThe additional size information in front of each folder name can be hidden by choosing "View > Show Details > Hide preceding values in Name column".
·TreeSize Free now uses the master file table (MFT) for scanning local NTFS drives to improve the performance especially on HDDs. The MFT is only accessible if TreeSize is started as administrator.
·The toolbar now adapts its icon size depending on the window size.
·The new option "Show time with date values" will output file dates (e.g. "Last access", "Last change") more precisely.
·Bugfix: After unchecking "Options > Show TreeSize in Explorer Context Menu", the menu item for TreeSize Free is now correctly removed from the Explorer context menu in all Windows versions.
·Bugfix: TreeSize Free no longer crashes if the Windows display scaling is set to more than 200%.
·Several minor improvements and a few minor fixes have been incorporated.
Version 2.7: Released on 31 Jan 2012
·The "Filter" dialog in the "Options" menu has been enhanced:
oBesides include filters it is now also possible to use exclude filters. This can be useful to exclude certain directories or files permanently from TreeSize Free scans.
oYou can now define if matching should be done normally considering the wildcards * and ?, if an exact match should be performed, or if the pattern is treated as regular expression.
oYou can decide if the given pattern should be matched against the full path or just against the object name.
·The right click menu now offers to remove a folder temporarily from TreeSize Free or to exclude it permanently from scans.
·A few minor improvements and fixes have been incorporated.
Version 2.6: Released on 13 Oct 2011
·If started as administrator, TreeSize Free is now able to calculate the size of directories you normally do not have access to, e.g. the folder "C:\System Volume Information". This should lead to more exact results and does not break Windows security because files still cannot be opened. Please note that the Personal and Professional Edition are able to calculate even more exact results, by taking NTFS Alternate Data Streams and hardlinks into account.
·The option Show Files in Directory Tree lets you decide whether or not individual files should be shown in the directory tree.
·It is now possible to apply NTFS compression to a directory branch and to decompress a directory branch using the right click menu.
·Two buttons have been added to the toolbar that allow navigating forward and backward, like in the Windows Explorer.
·The operations "Expand to level xxx" are now available in every subfolder's right click menu. A new option lets you decide whether or not the operations in the the "Expand" menu will be applied also to the [Files] items.
·A few minor improvements and bug fixes have been incorporated and the performance has been improved.
Version 2.5.1: Released on 16 Nov 2010
·Increased speed when expanding many folders using the new "Expand" menu and many files are involved.
·The progress of a scan is now shown in the Windows 7 taskbar.
Version 2.5: Released on 08 Nov 2010
·TreeSize Free is now able to show the NTFS compression rate in the directory tree. This adds the main feature of our discontinued tool NTFSRatio.
·A new option allows to show compressed folders in blue color. Folders that are only partially compressed will be shown in dark blue.
·It is now possible to rename files and folders in the directory tree. This can be done by using the right click menu or by pressing F2.
·A new menu "Expand" in the main menu and the right click menu of the root folder which allows to expand all subfolders up to a certain level.
·A scan can now be stopped using "File > Stop Scan".
·The layout of the main menu has been revised.
·The support for Windows 2000 has been dropped because Microsoft dropped it in July 2010. TreeSize Free V2.4, which is compatible with Windows 2000, will remain available on our website.
·A few minor improvements and bug fixes have been incorporated.
Version 2.4: Released on 10 Feb 2010
·Support for drag and drop operations has been added. They work within the directory tree as well as with the Windows Explorer.
·"View > Options > File Filter" now shows a dialog box that allows to configure the include filters more comfortably.
·The items "New instance of TreeSize Free (Ctrl+N)" and "Print Setup" have been added to the "File" menu.
·"Scan this folder" has been added to right click menu. It allows you to start a new instance of TreeSize Free that is rooted at the selected folder.
·The Explorer context menu is now also shown for the [Files] items in the directory tree. The displayed context menu will apply to all files that are summarized under this item.
·Expanding all folders using the right click menu is much faster now.
·The Windows Start menu now has a shortcut to start TreeSize Free with administrative privileges under Windows Vista and later.
·The new option "Scan with one Thread only" under "View > Options" can be used to force a scan using just a single thread. This will have less impact on the performance of your system during the scan.
·Bugfix: In case a selected file was deleted and then its folder was collapsed, an error could occur.
·Bugfix: The application settings were not deleted correctly from a system during uninstallation.
Version 2.3.3: Released on 03 Jul 2009
·Bugfix: In case a selected file was deleted and then its folder was collapsed, an error could occur if no other file or folder was selected.
·A few minor improvements have been incorporated.
Version 2.3.2: Released on 24 Jun 2009
·Bugfix: In some cases the root folder in TreeSize was not expandable.
Version 2.3.1: Released on 18 May 2009
·Folders without sub-folders are now expandable as well and show the files, similar to the [Files] items.
·A few minor improvements have been incorporated.
Version 2.3: Released on 22 Apr 2009
·The [Files] items in the directory tree are now expandable and show the individual files after being expanded.
·It is now possible to customize the gradient in the background of the tree in the Options menu.
·User settings are now stored in an XML file instead of the Windows registry.
·It is now possible to adjust the number of decimals of the size values in the View menu.
·TreeSize Free will now use up to 2 threads for scanning instead of 1. In the Personal Edition and the Professional Edition the number of threads is not limited and will be adjusted automatically based on the system load.
·Bugfix: When changing the sort type after a scan, sub-folders of non expanded directories were not sorted correctly after expanding.
·Improved performance
·Several minor bug fixes and improvements have been incorporated.
Version 2.2.1: Released on 19 May 2008
·Bugfix: The menu item added using View / Options / Show TreeSize in Explorer Context Menu was not working.
·Bugfix: On some systems deinstallation did not work.
Version 2.2: Released on 9 May 2008
·TreeSize Free is now able to handle paths with more than 255 characters when scanning the disk.
·The compatibility with 64Bit systems has been improved.
·TreeSize Free now optionally shows long tooltip windows (View / Options) with detailed information if the mouse cursor pauses over a folder for a while.
·TreeSize Free now contains an option to turn on or off its menu item in the Windows Explorer context menu (View / Options). This is now a per-user option.
·Changed Help System from "Readme.txt" to HTML based Help files.
·Minor bug fixes and improvements have been incorporated.
·The support for Windows 9x/ME has been dropped. Users of these Windows versions may still use TreeSize Free V2.1.
Version 2.1: Released on 7 May 2007
·With the new option 'Show Error Messages' (Options / View) you can now choose to prompt an error message or not, if an error occurs during a scan (e.g. access to folder denied).
·A new button was added to the toolbar that opens the selected folder in the Windows Explorer.
·The browse for folder dialog (File / Select Directory) now includes an edit box to enter the directory you want to scan instead of browsing for it.
·The "[Files]" nodes in the directory tree now also have a right click menu including an entry to open the folder that contains these files in the Windows Explorer.
·The right click menu item 'Count Folders' was renamed to 'Number of Subfolders' and is now available for all scanned sub-folders, not only for the root folder.
·BugFix: If a removable drive was scanned and TreeSize finds after a later restart that this drive does not exist anymore, an error message was shown. Now, the missing drive will be ignored.
Version 2.0: Released on 14 Mar 2007
·TreeSize Free is completely rewritten and now based on the code of the latest version of TreeSize Professional.
·Scans are performed much faster now.
·The view can be switched to GB and file count now.
·Unicode paths are now supported.
·NTFS compression is now taken into account when calculating the allocated space.
·The small size indicator bars have been replaced with a type of gradient bar chart.
Version 0.2 - 1.7.9: Published 08 Jul 1996 - 27 Nov 2006