Disk Analyzer
Disk Analyzer: A free Windows utility for tracing storage use through folder trees, file lists and a treemap. Ranked #56 of 104 in Disk Space Analyzers by our editors (3.2/10); pricing: Free plan; best for windows users seeking a simple free disk overview.
At a glance
- Editor score3.2 / 10
- PricingFree plan
- Best forWindows users seeking a simple free disk overview
- Free planYes
- Paid fromFree
- Desktop platformswindows
- Facts checked23 Sep 2026
Where it wins
- Scans locally without telemetry or an internet connection
- Combines a size-sorted folder tree with a largest-files list
- Shows drive statistics, a treemap and Excel export
Where it doesn't
- Windows desktop only
- Requires the .NET 8 Desktop Runtime
- Focused on storage overviews rather than richer analysis
Our verdict on Disk Analyzer
Disk Analyzer is a free Windows desktop utility for finding which folders and files consume storage. It is aimed at Windows 10 and 11 users who want a straightforward local view of drive usage, particularly solo users and small teams. Scans run offline without uploading data or requiring an internet connection, and no sign-up is required. An expandable folder tree sorts items by size, while a largest-files list and used/free drive statistics give several ways to locate storage use.
Its core strength is the path from overview to detail: users can drill into folders, open them in Windows Explorer, and switch to a folder treemap visualization. Fast parallel scanning is also listed among its features. Excel export provides a way to take scan results beyond the app. This makes the utility suitable for identifying large folders or files and reviewing scan output, without extending the listing into a broader storage-management suite.
The published plan is Free at $0, and Vermels describes Disk Analyzer as permanently free with no Pro tier. That keeps the choice simple for people who need the listed overview tools rather than a paid feature ladder. The trade-off is its narrow focus: its described feature set centers on folder sizes, largest files, drive statistics, treemap viewing and export. Windows users looking for those basics can consider it; users who need duplicate detection, richer reporting or file-type analysis should look for a tool that covers those tasks. Installation also depends on the .NET 8 Desktop Runtime, so it is not a fit for non-Windows systems.
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Disk Analyzer fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Desktop platforms | windows |
| Treemap view | Yes |
| Application sizes | Not verified |
| File-type breakdown | Not verified |
| External drive scans | Not verified |
| Exportable reports | Yes |
| Scan scope | Files_folders |
| Deployment | Desktop |
| Platforms | Windows |
| Support | |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | diskanalyzer.vermels.com |
| Facts checked | 23 Sep 2026 |
Alternatives to Disk Analyzer
- TreeSizeA broad Windows analyzer with strong free features and tiered automation tools.9.3
- 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
See all Disk Analyzer alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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