# WizTree

- **Name:** WizTree
- **Full title:** WizTree: Find What's Eating Your Disk Space in Seconds
- **Version:** 4.33
- **Developer:** Antibody Software
- **License:** Freeware
- **Platform:** Windows
- **Requires:** Windows 10 / 11
- **File type:** EXE Installer
- **Size:** 4.9 MB
- **Category:** System & Utilities
- **Updated:** 2026-10-20
- **SHA-256:** 3c56dfc08f06c58b9a9133a137c8559e016749e1605cf81e1b1d6b1deead2ff1
- **Canonical page:** https://filecobra.com/app/wiztree-disk-analyzer-pc/
- **Download page:** https://filecobra.com/download/wiztree-disk-analyzer-pc/
- **Direct download:** https://www.diskanalyzer.com/download

> WizTree is a blisteringly fast disk space analyzer for Windows that shows exactly what is eating your drive. Instead of crawling files one by one, it reads the NTFS Master File Table directly, mapping a full terabyte…

WizTree is a blisteringly fast disk space analyzer for Windows that shows exactly what is eating your drive. Instead of crawling files one by one, it reads the NTFS Master File Table directly, mapping a full terabyte drive in seconds — then displays the biggest space hogs in a sortable tree and a visual treemap so cleanup targets are obvious at a glance.

## Installation

1. **Download the installer** — Download WizTree from the official vendor link on this page.
2. **Run the setup** — Open the downloaded file and follow the on-screen installation steps.
3. **Launch the app** — Start WizTree from the Start menu or desktop shortcut.

## Editorial verdict

The speed claim is real: WizTree scanned a 1 TB NVMe drive holding 400,000 files in about six seconds, roughly fifty times faster than traditional analyzers that walk the directory tree. The treemap view made the culprits obvious instantly — one glance revealed a forgotten 40 GB virtual machine and a 12 GB log folder — and right-click actions let you delete, explore, or export selections without leaving the app. Top-1000 largest files, file-type breakdowns, and duplicate-name search cover every cleanup angle.

That raw speed comes from reading the NTFS Master File Table, so exFAT USB sticks, network shares, and non-NTFS drives fall back to a much slower conventional scan. The interface is utilitarian — powerful but plain — and commercial use requires a paid supporter code (free for personal use). If your C: drive is mysteriously full, this finds the answer faster than anything else we have tested. The 'allocated vs size' columns exposed 8 GB wasted to cluster slack on a drive full of tiny files — insight no other free tool surfaced. CSV export makes findings shareable, and the portable build scanned a colleague's laptop without installing anything.

### Strengths

- Mapped a 1 TB NVMe drive with 400,000 files in about six seconds by reading the NTFS Master File Table directly. On our test system the entire scan finished before competing tools had even enumerated the first folder.
- The treemap view makes space hogs obvious at a glance — one look found a forgotten 40 GB virtual machine. Color-coded rectangles scale with file size, so the biggest offenders dominate the view immediately.
- Top-1000 largest files, oldest-file search, file-type breakdowns, and duplicate-name detection cover every cleanup angle. The duplicate-name finder caught three redundant ISO downloads eating 15 GB.
- Right-click actions delete, explore, or export selections without leaving the application.
- Free for personal use, with a portable build for USB toolkits.

### Trade-offs

- exFAT USB sticks, network shares, and other non-NTFS drives fall back to a much slower conventional scan.
- The interface is utilitarian — powerful, but visually plain next to modern apps. On very old spinning hard disks the initial MFT read itself can take noticeably longer.
- Commercial use requires a paid supporter code per business site.

## FAQ

**Is WizTree free?**

Free for personal use. Business and commercial use requires a paid supporter code per site.

**Why is WizTree so much faster than other disk analyzers?**

On NTFS drives it reads the Master File Table directly instead of scanning every folder, which is why a full drive maps in seconds.

**Is there a portable version?**

Yes — a portable build runs without installation.

**Does WizTree work on Mac?**

Yes, separately: WizTreeMac is the official macOS port from the same developer.

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Source: https://filecobra.com/app/wiztree-disk-analyzer-pc/ · Mirrored from the publisher's own release channel by FileCobra. FileCobra runs no antivirus lab of its own.