Navigation:  Windows & Tabs > Chart > Tree Map

The Tree Map is a hierarchical chart that is able to visualize the sizes of each subfolder (not only direct child folders) of a selected directory branch.

Each folder is shown as a rectangle. The area of the rectangle represents the size of the corresponding folder. The rectangles of subfolders are located inside the rectangle of their parent folder. If a folder has no subfolders and file extensions statistics was activated during the scan, the file types are now shown as subitems.

The color of the rectangle face indicates the directory level. The colors range from dark red (top level directories) to bright yellow (directories with a deep file system level). These colors can be adjusted using the color dropdown in the toolbar of the "Charts" tab. The shown rectangles must have a minimum size to be displayed. You can customize this minimum value using a track bar in the toolbar. If this value is  small the chart will be can be very complex and confusing.
If you place the mouse cursor over the chart, you will see a tooltip containing information about the directory below the cursor. Double clicking on one of the rectangles will navigate to the corresponding directory in the directory tree. Drag and drop operations are supported in the tree map.

You can use the same export functions as with the bar or pie chart (see Charts). Use Ctrl + and Ctrl - to zoom the tree map, or use the mouse wheel while keeping the CTRL key pressed. Use the cursor keys, Home, End PgUp and PgDown to scroll the zoomed tree map. Or keep the spacebar pressed while dragging the treemap with the left mouse button for scrolling, similar to Photoshop.