A fast native Windows command-line utility for measuring directory sizes, ranking storage consumers, rendering depth scans as readable trees, and producing JSON output for automation.
Publisher’s description
What is fsize?
fsize by Wozzardman is open-source Windows software in the disk & usb tools category. It is written in C++.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. It runs without installation (portable).
Project description on GitHub: “Fast native Windows directory-size and storage-analysis CLI”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
Cons
- No native ARM64 build
In short: fsize is an open-source disk & usb tool tool for 64-bit PCs.
Is fsize safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
5F73D24F60D3E2E876209EC3E8DDECCAFB77B954A9B7C24A73A6B0FC50957445· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.1.0Latest | August 19, 2026 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id Wozzardman.Fsize -eProgram files (.exe): fsize.exe
Related guide: How to use winget: install and update apps
Information
- Publisher
- Wozzardman
- Category
- Disk & USB tools
- Licence
- MIT
- Price
- Free
- Source code
- github.com/Wozzardman/Fsize
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 1.1.0
- Released
- August 19, 2026
- Added to the catalogue
- September 3, 2026
- Versions listed
- 1
- Website
- github.com
- winget ID
- Wozzardman.Fsize
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is fsize free?
Yes. fsize is open-source software under the MIT licence.
Is fsize safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install fsize with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does fsize run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Can I use fsize without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to fsize?
Rufus, Ventoy, gdu, smartmontools and unetbootin. The alternatives page compares them.
