A bare 'Download WinDirStat' search is typically from someone who already knows the tool by name, often from a sysadmin forum or a 'find what's eating my disk space' guide, and just wants the installer. WinDirStat scans a drive and renders every file as a colored rectangle sized by its disk usage, so large files and folders are visually obvious at a glance. It's been a staple free Windows disk-space tool since the early 2000s and remains actively maintained as open source.
Reading the WinDirStat Treemap
WinDirStat's treemap assigns each file a rectangle proportional to its size, and colors files by extension, so all your video files might cluster in one color and all your archives in another. Clicking any rectangle highlights the matching file in the directory list and file-type legend.
This makes it fast to spot the real disk hogs, like a forgotten 40GB virtual machine image or a bloated log file, rather than clicking through folders one at a time in File Explorer.
Who ends up using WinDirStat
Sysadmins and power users trying to reclaim disk space on aging Windows machines rely on WinDirStat's visual breakdown.
- IT technicians troubleshooting a full hard drive on a client's Windows PC
- Home users hunting for forgotten large files like old video downloads
- Developers clearing space taken up by build artifacts and virtual machine images
Before you install
A couple of things worth knowing about WinDirStat before you request the link: it only ships for Windows, so double-check that's the machine you're installing it on before you request the link. And on pricing, WinDirStat is open source, so the installer is free with no trial timer, feature lock, or upsell screen to click past. It's developed and maintained by Bernhard Seifert & contributors.
System requirements
- WindowsWindows 10 or 11 (64-bit); older 7/8.1 builds usually still run but no longer get official support
It's a lightweight tool, so there's no serious CPU/RAM/storage requirement beyond what its OS already needs to run comfortably.
Quick steps
- Download the WinDirStat installer for Windows
- Run the installer (or use the portable ZIP build)
- Select a drive or folder to scan and review the treemap
WinDirStat: the honest trade-offs
- Treemap view makes large files and folders instantly obvious
- Completely free and open source with no bundled extras
- Works reliably on both older and newer Windows versions
- Interface and visuals look dated next to newer disk analyzers
- Full scans of very large drives can take a noticeable amount of time
This links to WinDirStat's official open-source release channel, matching the source available on its public project page, not a bundled adware repack.
Other System Utilities downloads people search for
Browse the full System Utilities category →
Keeping WinDirStat up to date
Since WinDirStat is open source, most Linux distributions keep it current through their own package manager. On Windows/macOS, re-running the installer from the official site (or an updater built into the app, if it has one) gets you the latest release. Sticking to the developer's own distribution channel — which is what this page links to — means you're never stuck on an old build with unpatched bugs just because a mirror site stopped updating its copy.
Features, install steps, alternatives and more detail live on the main WinDirStat page.
Frequently asked questions
Does WinDirStat modify or delete files automatically?
No, WinDirStat only scans and displays disk usage; deleting a file requires you to right-click it in the results and confirm, it never removes anything on its own.
Is there a portable version of WinDirStat that needs no install?
Yes, a portable ZIP build is available that runs without an installer, useful for running from a USB drive or on a machine where you can't install software.
