TreeSize Free 4.6

About TreeSize Free

TreeSize Free is the most popular and powerful free disk space analyzer from JAM Software. It instantly shows you exactly which folders and files are taking up the most space on your hard drives, SSDs, external drives and network locations.

With its beautiful treemap visualization and detailed folder tree, you can spot large files and folders in seconds. TreeSize Free is widely used by system administrators, power users, photographers, video editors and regular Windows users who want to clean up their drives and free up valuable disk space.

In version 4.6 (May 2026), TreeSize Free received improved performance on modern Windows 11 systems, faster scanning of large NVMe drives, enhanced treemap rendering and better support for high-DPI displays.

The free version already offers everything most users need: folder tree view, treemap, detailed file lists, export options and very fast scanning. The paid TreeSize Professional adds even more advanced features such as scheduled scans, file search inside folders, duplicate file detection and more.

TreeSize Free is trusted by millions because it is extremely fast, accurate, lightweight and completely safe. It never deletes anything automatically — it only shows you the data so you can decide what to clean.

Key Features

• Beautiful treemap visualization of disk usage
• Detailed folder tree with size information
• Real-time scanning of local, external and network drives
• Support for all file systems (NTFS, exFAT, FAT32)
• Export results to Excel, CSV, HTML or TXT
• Very fast and low resource usage
• Portable version available (no installation required)
• Works perfectly on Windows 11 and older systems