XDA spent the week installing Nano11 and watched a stripped-down Windows 11 image clock in at 9 GB on disk. The story made the rounds because the headline number is striking, but the comments thread quickly pivoted to the question every Windows power user has been asking for years: which debloat tool is actually safe to run on a daily-driver machine? The honest answer depends on whether you want a one-click cleanup, a custom ISO, or something in between, and the difference between options matters a lot more than the install size.
We tested 8 of the best apps for debloating Windows 11 across a fresh 23H2 install and a long-running 22H2 image. The yardstick was practical: how much disk and RAM each freed, what they broke, how the next big feature update treated the modified install, and how easy it was to undo the change if something went sideways. A clean reinstall is always available as the nuclear option, so the question is which tool gets closest to that result without one.
What to look for in a Windows 11 debloat tool
Six criteria separate the tools you can actually run from the ones that look impressive in a YouTube demo:
- Per-feature vs scorched earth. The safe tools let you uncheck individual components. The aggressive ones pre-decide for you.
- ISO modder vs live system. ISO tools build a new install medium. Live tools run on an existing system.
- Update survival. Some debloat tweaks get reverted by the next feature update. Some block updates entirely.
- Reversibility. Per-tweak undo is rare and valuable. Snapshot the disk before any irreversible tool.
- Telemetry vs apps. Telemetry tweaks change registry keys. App removal uninstalls packages. The two are different problems.
- Open-source vs closed binaries. For tools that touch the registry hundreds of times, open source matters.
Quick comparison
| App | Best for | Type | Free option | Standout feature |
|---|---|---|---|---|
| Chris Titus Tech WinUtil | One-stop tweaks, removals, and installs | PowerShell-driven UI on a live system | Yes (open source) | Built-in install of common apps after debloat |
| Win11Debloat | Reversible per-feature debloating | PowerShell script on a live system | Yes (open source) | Granular flags for what to keep |
| Tiny11 Builder | Building a smaller Windows 11 ISO | ISO modder | Yes (open source) | Reproducible image from your own source ISO |
| Nano11 | Smallest viable Windows 11 image | ISO modder | Yes (open source) | Aggressive removal for VMs and test rigs |
| BloatyNosy | Friendly app remover with a clear UI | Live-system app | Yes (open source) | Removes preinstalled and inbox apps from one window |
| O&O ShutUp10++ | Telemetry and privacy switches with a clear UI | Live-system app | Yes (free) | Per-setting risk indicator |
| Ghost Spectre | Heavily customised Windows 11 community build | Custom ISO distribution | Yes (free download) | One-shot polished image with bloat removed |
| Windows Sandbox | Throwaway Windows session for testing tweaks | Built-in Windows feature | Yes (Pro and Enterprise) | Test a debloat tool without touching your real install |
The 8 best apps for debloating Windows 11 on desktop
1. Chris Titus Tech WinUtil — best all-in-one toolkit
Chris Titus Tech WinUtil is a PowerShell-driven UI that bundles tweaks, app removal, and quick app installs into one window. It runs on a live Windows 11 install, gives every change a checkbox, and explains what each one does. The companion install tab lets you install common apps with winget after you cleaned house, which removes the second step most debloat guides leave dangling.
Where it falls short: You launch it from an elevated PowerShell command, which puts off less-technical users. Some tweaks under the “Tweaks” tab are aggressive and need a careful read.
Pricing:
- Free: open-source, no licence fee
- Paid: none
Platforms: Windows 10, Windows 11
Download: christitus.com/win or github.com/ChrisTitusTech/winutil
Bottom line: Pick Chris Titus Tech WinUtil to debloat Windows 11 if you want one tool that handles tweaks, removals, and reinstalls.
2. Win11Debloat — best granular per-feature script
Win11Debloat is a PowerShell script that exposes flags for almost every preinstalled component and inbox app. The default profile is sensible. Power users can pass flags to keep specific apps (the Xbox stack, the Mail app, the Camera) while removing the rest. The README explains each flag in plain English, which is rare for this category.
Where it falls short: Script-only, no UI. You run it from a terminal and pass parameters. If you wanted a click-and-forget app, this is not it.
Pricing:
- Free: open-source, no licence fee
- Paid: none
Platforms: Windows 10, Windows 11
Download: github.com/Raphire/Win11Debloat
Bottom line: Pick Win11Debloat to debloat Windows 11 if you want precise per-feature control and you are comfortable in PowerShell.
3. Tiny11 Builder — best for building your own smaller ISO
Tiny11 Builder takes a stock Windows 11 ISO you supply and produces a smaller, slimmer install ISO. Because you pass the source ISO yourself, you stay on a real Microsoft image rather than a redistributed one, which matters for trust and for activation. The output keeps Windows Update functional, which is the gap that separates Tiny11 from more aggressive forks.
Where it falls short: Reading the install scripts is mandatory if you care about exactly what got cut. A few cumulative updates have needed extra steps on Tiny11 images during their first month, which is the price of a slimmed-down WIM.
Pricing:
- Free: open-source, no licence fee
- Paid: none
Platforms: Windows (any version that can run PowerShell and dism)
Download: github.com/ntdevlabs/tiny11builder
Bottom line: Pick Tiny11 Builder to debloat Windows 11 if you want a reproducible smaller ISO without trusting a community-distributed image.
4. Nano11 — best for the smallest possible Windows 11
Nano11 is the same author’s aggressive sibling to Tiny11. It strips far more and gets the on-disk size down to single-digit gigabytes for the install. The trade-offs are real: Windows Update support is reduced, Defender is removed, and the resulting install is best treated as a throwaway VM image rather than a daily driver. For test rigs, throwaway sandboxes, and constrained hardware where you control updates manually, the size is unmatched.
Where it falls short: Not a general-purpose desktop install. Updates and feature upgrades are deliberately restricted. Some apps that depend on inbox components fail to install.
Pricing:
- Free: open-source, no licence fee
- Paid: none
Platforms: Windows
Download: github.com/ntdevlabs/tiny11builder (the same repo ships Nano11)
Bottom line: Pick Nano11 to debloat Windows 11 if you need the smallest viable image for a VM, a test rig, or a tightly constrained device, and you accept the loss of update support.
5. BloatyNosy — best UI-driven app remover
BloatyNosy is a small native app that focuses on the one thing that frustrates new Windows users most: preinstalled bloat. The UI lists inbox apps, Microsoft Store stubs, and OEM additions, and you tick the ones to remove. It uses standard appx removal under the hood, which means the changes are reversible by reinstalling each app from the Store.
Where it falls short: App removal only. It does not touch registry tweaks, telemetry, or services.
Pricing:
- Free: open-source, no licence fee
- Paid: none
Platforms: Windows 11
Download: github.com/builtbybel/BloatyNosy
Bottom line: Pick BloatyNosy to debloat Windows 11 if you only need a UI to remove preinstalled apps and you do not want to touch the registry.
6. O&O ShutUp10++ — best telemetry and privacy panel
O&O ShutUp10++ is the longest-running telemetry-management tool for Windows. The UI lists each setting with a risk indicator (green, yellow, red) and a clear description of what it changes. The recommended profile flips the safer settings without breaking the OS. The tool also exports and imports profiles, which is handy when applying the same baseline across multiple machines.
Where it falls short: Closed-source freeware from a commercial vendor. Some power users prefer to stick to open tools for registry-level work.
Pricing:
- Free: free for personal and business use
- Paid: none
Platforms: Windows 10, Windows 11
Download: oo-software.com
Bottom line: Pick O&O ShutUp10++ to debloat Windows 11 if your priority is telemetry and privacy settings rather than app removal.
7. Ghost Spectre — best polished community ISO
Ghost Spectre is a long-standing community-built Windows 11 ISO with bloat removed, a configurable installer, and several variants tuned for different priorities. The download includes a Superlite build that strips heavily and a more balanced build that keeps Windows Update working. The installer lets you opt back in to features you want, which makes it more flexible than a hard fork.
Where it falls short: It is a third-party redistribution. Trust depends on the community’s track record and your willingness to verify checksums. Some users prefer to build from Microsoft media for exactly this reason.
Pricing:
- Free: community ISO download
- Paid: none
Platforms: Windows 11
Download: ghostspectre.com (verify checksum)
Bottom line: Pick Ghost Spectre to debloat Windows 11 if you want a ready-made polished ISO and you trust the community distribution model.
8. Windows Sandbox — best for testing every tool above safely
Windows Sandbox ships inside Windows 11 Pro and Enterprise and gives you a throwaway Windows session that resets on every boot. For testing debloat scripts or community ISOs before running them on the real install, this is the right answer. The Sandbox shares the host’s installer state but keeps changes isolated, which means a script that bricks the guest leaves the host untouched.
Where it falls short: Pro or Enterprise edition only. The session resets when closed, which means anything you want to keep needs to be exported.
Pricing:
- Free: bundled with Pro and Enterprise editions
- Paid: none beyond the OS
Platforms: Windows 11 Pro, Enterprise
Download: Built in, enabled under Windows Features.
Bottom line: Pick Windows Sandbox to test any debloat tool on this list before you commit it to your real install.
How to pick the right one
If you want the broadest one-stop tool with explanations, run Chris Titus Tech WinUtil.
If you want precise control from a script, run Win11Debloat.
If you want a smaller ISO built from your own Microsoft source, run Tiny11 Builder.
If you want the smallest possible image for a VM or a test rig and you do not care about updates, run Nano11.
If you only care about getting rid of preinstalled apps, run BloatyNosy.
If you only care about telemetry and privacy switches, run O&O ShutUp10++.
If you want a polished community ISO with a configurable installer, run Ghost Spectre.
Before running any of the above on your daily driver, run it inside Windows Sandbox first.
FAQ
Is it safe to debloat Windows 11?
It depends on the tool. Per-feature scripts like Win11Debloat and reversible apps like BloatyNosy are safe in the sense that the changes can be undone. Aggressive ISO mods like Nano11 are not safe for a daily-driver setup because they remove components other software expects.
Will Windows Update still work after debloating?
It depends. Tiny11 keeps Windows Update functional. Nano11 deliberately reduces it. Win11Debloat, WinUtil, and BloatyNosy leave updates working as long as you do not also disable the update services.
What is the difference between Tiny11 and Nano11?
Tiny11 is a slimmer image that still runs as a normal Windows install with updates. Nano11 is much more aggressive and is meant for VMs, sandboxes, and constrained hardware where you do not need feature updates.
Does any debloat tool void Windows activation?
Tools that work on a Microsoft ISO you supplied (Tiny11 Builder, Win11Debloat on a real install) do not touch activation. Community redistributions like Ghost Spectre keep activation intact as long as you bring your own licence.
Can I undo what these tools change?
Per-tweak undo exists in Win11Debloat and O&O ShutUp10++. Removed apps can usually be reinstalled from the Microsoft Store. ISO-based tools (Tiny11, Nano11, Ghost Spectre) require a fresh install to fully revert.