What is TreeSize and why should I use it?

TreeSize is a disk space management tool for Windows that allows you to quickly scan folder sizes, visualize disk usage with treemaps, and identify large or unnecessary files. Marketing Executives use TreeSize to efficiently free up storage and optimize their computer’s performance.

How do I scan my folders with TreeSize Free?

Open TreeSize Free, click Select Directory or Select Folder, and the software will scan your chosen drive or folder. The results are displayed in a tree view, showing folder sizes, file counts, and the percentage of space each folder occupies relative to its parent.

Can I delete large or unnecessary files using TreeSize?

Yes. In TreeSize Free, you can select a file or folder and click Delete to move it to the Recycle Bin, or use Shift + Delete to permanently remove it. This helps Marketing Executives quickly reclaim storage and manage disk space efficiently.

What is the Treemap Chart in TreeSize and how does it help?

The Treemap Chart visualizes folder and file sizes as colored boxes, making it easy to see which items occupy the most space. You can also view it in 3D to highlight hierarchy and quickly access files by clicking on the interactive “bubbles.” This feature simplifies disk management for professional users.

TreeSize – Fast Folder Size Scanner Tool [Updated 2025]

Table of Content

TOS Content Editor

24th Nov, 2025

Are you running out of storage space but still need to download and save files? Unable to access cloud services like Google Drive, OneDrive, or Dropbox without an internet connection? TreeSize is a powerful solution to quickly check folder sizes, free up storage, and remove unnecessary files. With TreeSize Free, you get a comprehensive overview of which files are consuming the most space, making it easy to manage your storage efficiently. In this guide, TOS will walk you through how to download and use TreeSize Free quickly and effectively.

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What is TreeSize?

TreeSize is a disk space management software developed by JAM Software, specifically designed for Windows. It helps users monitor and manage disk space efficiently. The free version, TreeSize Free, provides essential features for casual use, while the paid versions offer advanced and professional-level tools.

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Key Features of TreeSize Free

TreeSize Free offers several core functionalities:

1. Quick Folder Size Scanning

Scan drives and folders to identify which files consume the most space.
Get a clear overview of free and used disk space.

2. Remove Large or Unnecessary Files

Identify the largest files and folders.
Delete temporary or unnecessary files to free up disk space quickly.

3. Disk Scanning and Export Options

Scan drives and export results in formats like Excel, CSV, or plain text.
Keep reports for documentation or future reference.

4. Treemap Chart Visualization

View folder sizes in a graphical treemap format.
Understand data distribution visually for faster decision-making.

5. Detailed Reports and Analysis

Export reports as HTML, XML, or PDF.
Track disk usage trends and manage storage proactively.

Key Features of TreeSize Free (Source: Internet)

How to Download and Install TreeSize Free

Follow these steps to download and install TreeSize Free:

Step 1: Go to the official TreeSize Free website and click “Free Download” in the top-right corner.

Step 2: Choose your preferred installer:

TreeSizeFreeSetup.exe (Installer, 11.57 MB)
TreeSizeFree-Portable.zip (Zipped Executable, 14.25 MB) → Click Download.

Step 3: Click “Continue with TreeSize Free” at the bottom of the page.

Step 4: After downloading, double-click the installer to start installation.

Step 5: Accept the agreement, click Next, choose the default installation path, and click Finish.

Step 6: Open TreeSize Free as an administrator.

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Official Download Treesize Link

TreeSize Free 4.7.3

Other Versions:

Official Download Treesize Link — Instructions on how to download and link to download treesize free (Source: Internet)

How Do I Launch TreeSize on My Computer?

Once installed, TreeSize can be launched from the Windows Start menu, Start screen, or directly from a folder or drive context menu. Here’s an overview of the key components in the main TreeSize window:

Ribbon Toolbar

The Ribbon provides access to all TreeSize commands. It’s organized into logical sections, such as:

Home Tab: Contains frequently used functions and components.
View Tab: Allows you to customize the TreeSize interface.

Colored tabs on the right indicate context depending on the current view. Use “Select Directory to Scan” to start scanning a drive or folder.

Selecting Drives or Folders

The dropdown menu lets you choose the drive or folder you want to scan.
You can also type the path directly into the control field.
Press Enter or click the Scan button to begin scanning the specified path.
TreeSize remembers recently used paths and adds them to the dropdown list for convenience.

Folder Tree Overview

The Folder Tree displays the hierarchy of folders or drives being scanned, giving an instant view of the size of each folder.

Drive List

The Drive List provides an overview of all local and mapped network drives.
Additional network drives can be added via the context menu.
Double click a drive to start scanning it in TreeSize.

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How to Use TreeSize Free

Using TreeSize Free is easier than you might think. Follow these six steps to optimize storage and free up space quickly.

1. Scan Folder Sizes and Free Up Disk Space

Step 1: Open TreeSize and Select Directory

Launch TreeSize Free.
Click Select Directory at the top-left corner to choose the drive or folder you want to scan.

Click “Select Directory” (Source: Internet)

Step 2: Choose the Folder to Scan

Click Select Folder.

Tip: Start with the C: drive since it usually contains important files and temporary data that may take up a lot of space.

Select the folder to scan “Select Folder” (Source: Internet)

After scanning, TreeSize displays folders and files in a tree view, similar to File Explorer, giving you a clear overview of disk usage.

Step 3: Expand Folders and Check Folder Sizes

Click the arrow next to a folder to see subfolders and files.

Quét file trên TreeSize (4) — Click the arrow to see the subfolders (Source: Internet)

On the left, the software shows how much space each folder occupies.

Xem dung lượng File trên TreeSize (1) — See how much space that folder is taking up (Source: Internet)

Percentages indicate how much of the parent folder’s space a folder uses not the entire drive.

Example: The Windows folder may use 91.9% of its parent folder “MountUUP,” not 100% of the C: drive.

The subfolder ‘Windows’ is using 91.9% of the total space of the parent folder “MountUUP” (Source: Internet)

Step 4: Check File Count and Sizes

Click File Count to see the exact number of files and their sizes in the selected folder or drive.

Other options like Size and % of Parent adjust how folder usage is displayed.
Key views to use: % of Parent (Size) and File Count for a quick overview.

“Size” and “Percentage” view options (Source: Internet)

Step 5: Delete Unnecessary Files

Select the file or folder → click Delete.
The item moves to the Recycle Bin, helping you clean up without extra confirmation pop-ups.

Delete junk files to free up space (Source: Internet)

Step 6: Permanently Delete Files

To permanently remove files, select the item and press Shift + Delete.
Confirm by clicking Yes in the pop-up.
Permanently deleting large, unnecessary files frees up storage efficiently for future use.

Delete junk files permanently (Source: Internet)

2. Use Treemap Charts

Click Show Treemap Chart to visualize folder sizes in a graphical format.

Treemap Chart (“Show Treemap Chart”) (Source: Internet)

Larger boxes represent larger folders. Color levels indicate depth within the folder hierarchy.
You can also view the treemap in 3D mode by selecting Show chart in 3D under Chart Options.

Click “Show at bottom” in the “Chart Options” tab (Source: Internet)

Before moving forward, it’s important to understand how the treemap represents data. Larger boxes represent folders or files that occupy more space.

Example: The Games folder appears smaller than Windows because it uses less disk space.

The “Games” folder is smaller than “Windows” so it uses less space. (Source: Internet)

Different shades of blue indicate folder depth within the parent folder. Example: A subfolder like Virtual Machine at level 5 is light blue, while the main C: drive at level 0 is dark blue.

The “Virtual Machine” subfolder located at level 5 will be light blue (Source: Internet)

The folder you select as the parent determines the treemap’s hierarchy. The parent folder is always level 0, and all subfolders and files are color-coded accordingly.

You can view the treemap in 3D by going to Chart Options and checking “Show chart in 3D”.

Sử dụng biểu đồ Treemap trên TreeSize (6) — Treemap charts can also be viewed in 3D (Source: Internet)

Viewing the TreeSize Treemap in 3D provides several benefits:

Clearer Color Levels: The depth and hierarchy of folders are easier to distinguish through distinct color gradients.
Interactive “Bubbles”: You can see visual “bubbles” representing folders or files.
Quick Access: Clicking on any bubble allows you to instantly access that specific file or folder.

This 3D visualization makes it easier for Marketing Executives to identify large files and manage disk space efficiently.

Sử dụng biểu đồ Treemap trên TreeSize (7) — You may also see “bubbles” in folders or files (Source: Internet)

The Windows Explorer option acts as a context menu, letting you perform standard file operations directly from the treemap view.

Sử dụng biểu đồ Treemap củaTreeSize (8) — “Windows Explorer” option (Source: Internet)

3. Export Scan Results

Go to the File tab → click Export → choose the desired format (HTML, CSV, XML, PDF).

Click on “File” tab -> click “Export” button (Source: Internet)

For Excel exports, a 30-day trial of the paid version is required.

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Why TreeSize Matters for Marketing Executives

As a Marketing Executive, your workflow often involves handling large datasets, media files, and project documentation. TreeSize helps you:

Quickly identify storage heavy folders.
Free up space to ensure smooth operations on your computer.
Visualize data storage patterns for better planning.
Share storage reports with IT or team members for collaborative management.

FAQ about Treesize

What is TreeSize and why should I use it?
TreeSize is a disk space management tool for Windows that allows you to quickly scan folder sizes, visualize disk usage with treemaps, and identify large or unnecessary files. Marketing Executives use TreeSize to efficiently free up storage and optimize their computer’s performance.
How do I scan my folders with TreeSize Free?
Open TreeSize Free, click Select Directory or Select Folder, and the software will scan your chosen drive or folder. The results are displayed in a tree view, showing folder sizes, file counts, and the percentage of space each folder occupies relative to its parent.
Can I delete large or unnecessary files using TreeSize?
Yes. In TreeSize Free, you can select a file or folder and click Delete to move it to the Recycle Bin, or use Shift + Delete to permanently remove it. This helps Marketing Executives quickly reclaim storage and manage disk space efficiently.
What is the Treemap Chart in TreeSize and how does it help?
The Treemap Chart visualizes folder and file sizes as colored boxes, making it easy to see which items occupy the most space. You can also view it in 3D to highlight hierarchy and quickly access files by clicking on the interactive “bubbles.” This feature simplifies disk management for professional users.

Conclusion

In summary, TreeSize is a powerful disk space management tool that provides detailed insights into folder and file sizes, enabling efficient storage optimization. With its intuitive interface, treemap visualizations, and export options, managing your computer’s storage becomes easier and more efficient. For marketers and professionals, using TreeSize ensures that critical files remain organized and accessible, while unnecessary files are removed, freeing up valuable storage.

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