WizTree for PC: How to Download and Install on Windows (2026 Guide)

Windows says your drive is almost full, but File Explorer will not tell you where the space went. Right-clicking Properties on folder after folder takes forever — and a full drive slows updates, installs and everyday work.

This guide shows you how to download WizTree for PC from its official website, install it on Windows 11 or 10, and find the folders and files eating your disk space in seconds. Key features, system requirements and honest licensing answers are covered below.

What Is WizTree?

WizTree is a disk space analyser for Windows from Antibody Software. It scans a drive and shows you exactly which folders and files are using the most space, presented as a sortable folder tree and a colourful treemap where every file is a rectangle sized by how much room it takes.

Its claim to fame is speed. On NTFS drives — the standard Windows format — WizTree reads the Master File Table directly instead of crawling through every folder, so it scans a full drive in seconds where other tools take minutes. Then you sort by size, spot the giant forgotten download or game folder, and deal with it. A portable version is available too.

Key Features of WizTree

Extremely fast scans: Reads the NTFS Master File Table directly, scanning most drives in a few seconds.
Visual treemap: Big files appear as big coloured blocks, so space hogs are obvious at a glance.
Sortable folder tree: Every folder ranked by size, with file counts and percentages of the drive.
Largest-files view: A dedicated list of the biggest individual files anywhere on the drive.
File-type breakdown: See how much space goes to videos, images, system files and other categories.
Export results: Save scan data to a CSV file for reports or later comparison.
Portable version: Run WizTree from a folder or USB stick without installing it at all.

System Requirements

Operating System: Windows 11, Windows 10, Windows 8 or Windows 7
Processor: Any modern Intel or AMD CPU
RAM: 1 GB is plenty, even for very large drives
Storage: Around 10 MB for the program itself
Internet: Only needed for the initial download
Account: None — no sign-up required for personal use
Permissions: Administrator rights let WizTree read the Master File Table and scan protected folders

How to Download WizTree (Official Method)

WizTree is small, fast and popular — exactly the kind of utility that download portals love to repackage with their own installers and extras. Get it only from the official WizTree website linked below, where Antibody Software publishes the genuine installer and the portable version free for personal use.

Official Website: Download WizTree from the official website

Step-by-Step Installation

Open the official WizTree download page linked above.
Click the download button for the installer version (the portable ZIP is offered on the same page).
Save the file, named like wiztree_x_xx_setup.exe, to your Downloads folder.
Double-click the installer and approve the Windows permission prompt.
Accept the licence agreement and keep the default installation folder.
Choose your shortcut options and click Install.
Click Finish and launch WizTree from the Start menu.

First-launch note: For the fastest, most complete scan, run WizTree as administrator: right-click its shortcut and choose “Run as administrator”. Without it, some protected system folders are skipped and the Master File Table shortcut cannot be used on every drive.

How to Find What’s Eating Your Disk Space with WizTree

Open WizTree (as administrator) and select the drive you want to check from the drop-down at the top.
Click “Scan” and wait a few seconds while the results fill in.
Click the “Size” column header to sort the folder tree from biggest to smallest.
Expand the top folders to drill down: a giant Users, Games or Downloads folder usually explains the problem.
Scroll to the treemap at the bottom — the biggest coloured blocks are your largest single files.
Right-click a file or folder to open its location in Explorer, then move or delete it from there once you are sure you no longer need it.

Is WizTree Really Free?

For home and personal use, yes — WizTree costs nothing, and the free download is the complete analyser: fast MFT scanning, the treemap, exports and the portable version, with no time limit and no features held back. The honest exception is commercial use. If you use WizTree at work, the developer asks you to buy a supporter licence, which unlocks commercial use and supports development. Home users can simply download and scan; businesses should pay the modest fee.

Frequently Asked Questions

Is WizTree safe to download and use?
Yes, from the official website linked above. WizTree is a well-known tool from Antibody Software that only reads your drive’s file table and reports sizes — it changes nothing by itself. Deleting files is your own action in Explorer, so double-check before removing anything, and avoid portals offering bundled copies.

Why is WizTree so much faster than other disk analysers?
On NTFS drives, Windows already maintains a Master File Table listing every file and its size. Most analysers walk through folders one by one; WizTree reads that table directly, which is why a full-drive scan finishes in seconds. On non-NTFS drives it falls back to normal scanning and is slower, but still works.

Can WizTree delete files for me?
WizTree has limited right-click delete options, but the safer habit is to use it as a finder: locate the space hog, open its folder in Explorer, and decide there. Never delete files inside Windows or Program Files folders unless you know exactly what they are — use Disk Cleanup or uninstall programs properly for those.

What is the difference between WizTree and WinDirStat?
Both show where your disk space went, and both are free for home users. WinDirStat is open source and scans by crawling folders, which can take minutes. WizTree reads the NTFS file table directly and usually finishes in seconds — why many technicians reach for it first on large drives.

Conclusion

WizTree turns the mystery of a full drive into a ten-second answer: scan, sort, and the biggest folders and files are right in front of you. Download it free from the official website, run it as administrator, and reclaim the space your PC has been hiding.

Download WizTree from the Official Website

WizTree for PC: How to Download and Install on Windows (2026 Guide)