TreeSize
TreeSize: A broad Windows analyzer with strong free features and tiered automation tools. Ranked #1 of 104 in Disk Space Analyzers by our editors (9.3/10); pricing: Free plan · 14-day trial; best for windows power users and administrators.
At a glance
- Editor score9.3 / 10
- PricingFree plan · 14-day trial
- Best forWindows power users and administrators
- Free planYes
- Desktop platformsWindows
- Facts checked23 Sep 2026
Where it wins
- Analyzes files, folders, drives, servers, networks, and cloud storage
- Combines treemaps, file-type statistics, duplicate search, and cleanup tools
- Supports scheduled scans, comparisons, portable use, and extensive exports
Where it doesn't
- Runs on Windows rather than across multiple desktop platforms
- TreeSize Free is limited to private, non-commercial use
- Advanced automation and reporting require paid editions
Our verdict on TreeSize
TreeSize is Windows disk-space analysis software for individuals, power users, consultants, and IT administrators. It scans local and network storage, then presents folder and file sizes through directory, chart, pie, bar, and treemap views. File-type statistics, largest-file filtering, duplicate-file search, and file operations such as copy, move, delete, archive, and bulk rename help users investigate and manage storage. TreeSize Free is available at no cost for private, non-commercial use and includes treemap charts, PDF reports, and file-level folder analysis.
The paid editions add capabilities in clear steps. TreeSize Personal costs $25.20 per user per year and adds duplicate-file search, disk-space comparison over time, and largest-file filtering. TreeSize Professional costs $49.20 per user per year and adds command-line parameters, task scheduler options, and PDF, Excel, and HTML exports. The TreeSize Consultant License costs $288 per user per year and adds portable use, support for multiple clients, and reusable reporting and automation. A 14-day free trial is also available. Users who need recurring scans, command-line control, or broader reporting should consider the paid tiers; users with occasional private cleanup needs may find Free sufficient.
TreeSize has a wide storage and workflow scope for a Windows utility. It can search across drives, servers, and networks, compare scan results over time, schedule scans and exports, and export to PDF, Excel, HTML, CSV, text, and other formats. Integrations include SharePoint, Amazon S3, WebDAV, VHDX drive images, Outlook mailboxes, Azure Blob Storage, Linux via SSH, MTP, and Windows Task Scheduler. Portable installation on USB devices is supported, with portable use specifically included in the Consultant License. TreeSize suits administrators and power users who need detailed storage analysis and repeatable reporting. It is less suitable for users seeking a non-Windows tool or a simple, cross-platform disk viewer.
Your product? Our editors can test TreeSize in depth and publish a review, labelled as paid · from $149/mo →
TreeSize pricing
All 4 TreeSize plans and prices →
TreeSize fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Desktop platforms | Windows |
| Treemap view | Yes |
| Application sizes | Not verified |
| File-type breakdown | Yes |
| External drive scans | Yes |
| Exportable reports | Yes |
| Scan scope | Files_folders |
| Free trial | 14 days |
| Deployment | Desktop, Self-hosted |
| Platforms | Windows |
| Compliance & security | GDPR |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan · 14-day trial (source) |
| Website | jam-software.com |
| Facts checked | 23 Sep 2026 |
Alternatives to TreeSize
- WinDirStatA classic Windows analyzer with treemaps, file breakdowns, duplicate detection, and CSV export.9.1
- FilelightA free, open-source disk analyzer with strong KDE integrations and ring-based visuals.9.0
- WizTreeA focused Windows analyzer with treemaps, duplicate detection, and broad device scanning.8.9
See all TreeSize alternatives →
TreeSize vs the competition
- TreeSize vs WinDirStat
- TreeSize vs Filelight
- TreeSize vs WizTree
- TreeSize vs SpaceObServer
- TreeSize vs SpaceMonger
- TreeSize vs OmniDiskSweeper
Compare TreeSize with any tool side by side →
Also Ranked In
TreeSize is ranked in 2 of our directories.
Used TreeSize? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used TreeSize for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
TreeSize is listed in our Disk Space Analyzers directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/treesize/"><img src="https://www.itechguides.com/best/badge/treesize.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update