What is New in TreeSize?

Version 9.9

New Path Entry in File Search

You can now find, select, and manage search targets much faster and, if desired, entirely using the keyboard.

  • You can now add new search paths in fewer steps, and the entry process can be controlled entirely via the keyboard.

  • The path selection drop-down menu now displays all drives connected in Windows Explorer, in addition to favorites and recently searched paths. Local drives, network drives, cloud services, and others appear with their drive letters and available storage space.

  • In the dialog for selecting scan and search targets, you can select multiple drives just as you would in Windows Explorer and add them all at once.

  • In the new search history, you can see all recently searched paths and your favorites at a glance. You can clear the history entirely or entry by entry.

  • You can permanently pin particularly important search targets using the pin icon so they’re always at your fingertips. You can pin multiple selected paths at once with a single click.

  • Selected search destinations appear as individual tiles in the path bar. The remove button is located directly on the tile and is much easier to click.

  • A left-click now selects a search path instead of immediately switching to edit mode. Use Ctrl+click and Shift+click to select multiple paths and remove them together using Delete or Backspace. To edit, simply click a second time or press F2.

  • Unaccessible drives and paths are marked as such even before the search begins. This helps you avoid searches that yield no results.

New Selection Logic for Results Lists

In the duplicate search, it’s crucial to select the right files. With the new selection logic, you can use rules to specify which duplicates are selected. This feature is also available in the standard file search.

  • The selection dialog has been completely redesigned. Frequently used selections are easily accessible and clearly grouped.

  • You can specifically select only the files located in a certain path, or only those not located there. For example, you can keep all files in your archive folder and select only the copies located elsewhere.

  • For more complex requirements, you can build a comprehensive set of rules using the advanced selection options to create your own custom selection.

Additional New Features & Improvements

  • Our chatbot, JAMie, is now available directly within TreeSize and answers your questions about the application without requiring you to leave the program. JAMie cannot see your screen and has no access to your scan data, for example.

  • The file preview now appears only when a file is selected. This leaves more space in the right-hand pane.

  • You can now display two file previews simultaneously to compare contents directly. Enable this feature using the new pin icon in the file preview or the corresponding checkbox in the ribbons.

  • You can now change the file owner recursively for all subelements of a folder in a single step.

  • You can now configure the level of detail for SQLite exports just as you do for other exports. For example, you can create exports without information about individual files, making them smaller and more efficient.

  • The TreeSize setup now features a new, modern design.

  • We have thoroughly revised the help entry on the various scan targets; it is now much easier to understand.

Bug Fixes

  • Special characters are now displayed correctly again when importing an SQLite scan.

  • Umlauts and special characters (e.g., ä, ö, ü, ß) are now displayed correctly again in Excel exports (.xlsx) on systems with the Windows option “Beta: Use Unicode UTF-8 worldwide” enabled.

  • An error that could occur when searching for file contents in Google Drive has been fixed.

  • The installation now runs smoothly again, especially for update installations. In some cases, a background process had been interfering with the installation.

  • A potential error that could occur when copying a report during bulk renaming has been fixed.

  • For the categories “Number of Subelements” and “Total Elements,” you can now select the correct search configurations that work with numbers.

  • Switching from the MSI installer to the standard TreeSize installer no longer results in duplicate app entries.

  • When you save a configuration in the deduplication dialog, the reference drive is now saved correctly.

  • When text scaling is set to more than 120%, the cursor no longer disappears while renaming.

10/05/2026