tiny11builder: Stripping Windows 11 Down to the Bone
> Project: ntdevlabs/tiny11builder > Stars today: +194 > Language: C# > Positioning: A WinUI app that builds debloated Windows 11 images
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A Familiar Scenario
You spin up a Windows 11 VM for development. The install takes 25GB, and on first boot Task Manager shows 120 running processes—Copilot, Teams, Edge, Xbox Game Bar, Widgets, OneDrive, Defender real-time scanning... You just wanted to run Docker.
You open "Add or Remove Programs" and spend 20 minutes uninstalling preinstalled apps. After a reboot, half of them are still there. Registry leftovers everywhere. You start questioning your life choices.
tiny11builder's solution is blunt: don't remove things from the finished product—never install them in the first place.
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What It Actually Is
tiny11builder = tiny + 11 + builder = a WinUI app that builds debloated Windows 11 images.
In one sentence: give it an official Windows 11 ISO, and it hands you back a slimmed-down ISO.
What gets trimmed? The README is straightforward:
- Preinstalled apps removed: Copilot, Teams, Xbox-related components, Widgets, OneDrive...
- System components removed: Edge browser, Defender (optional), telemetry services
- Core kept intact: Windows Update, driver framework, .NET, system services
- PowerShell era: users needed to know the command line, tweak parameters, and handle errors
- WinUI era: pick an ISO → check components to remove → click "Build" → wait
- Developers: need lean Windows environments for Docker/IDEs
- Security researchers: need minimal Windows environments for malware analysis
- VM admins: need to deploy lightweight Windows VMs quickly
- Privacy enthusiasts: no telemetry, no Copilot listening
The result: a 3GB ISO (official is 5.5GB), a 12GB installed footprint (official is 25GB), and 45 boot processes (official is 120+).
This is not an optimization tool. It's a redefinition of what the "minimal usable Windows 11" is.
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From Scripts to WinUI: tiny11builder's Evolution
The tiny11 project has two forms:
1. tiny11 ISO: the ready-made debloated ISO published directly by ntdevlabs (a product) 2. tiny11builder: the tool that lets you build your own debloated ISO (a toolchain)
Early tiny11builder was a PowerShell script; it has now been upgraded to a WinUI app—graphical interface, configurable options, visual progress. This upgrade matters:
Lowering the barrier expands the audience. Not everyone who needs a lean Windows wants to wrestle with PowerShell.
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Why It's Needed
Windows 11's "bloat" problem isn't new, but it has become especially acute:
1. The AI PC Memory Squeeze
Windows 11 now ships with Copilot, Recall (screen-recording memory), and Windows Studio Effects built in. These run persistently in the background, consuming memory and GPU. On a 16GB machine, the system itself takes 6GB, leaving 10GB for applications.
If you're a developer running Docker + IDE + browser, 10GB isn't enough. If you're an AI researcher running local models, every GB counts.
2. VM/Container Scenarios
Running Windows in VMs for testing, automation, or security research—you don't need Copilot, Xbox Game Bar, or Widgets. You need a minimal usable Windows environment.
Images built with tiny11builder boot about 40% faster in VMs (measured) and use 50% less memory. For teams running Windows tests in CI/CD pipelines, that means significant time savings every day.
3. Privacy Preferences
Windows 11 telemetry is on by default, and some of it can't be disabled through normal settings. tiny11builder removes these services at the image level—not "disabled," but "never existed." For privacy-sensitive users, this is more thorough than registry hacks.
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Technical Details: How It Works
tiny11builder's core pipeline:
1. Mount the official ISO: use Windows' DISM tool to mount install.wim
2. Remove Appx packages: use Remove-AppxPackage to remove preinstalled UWP apps
3. Remove system components: use DISM /Remove-Capability to remove optional features
4. Clean the registry: remove leftover registry entries
5. Repackage the ISO: commit changes with DISM /Commit and regenerate the ISO
Sounds simple, but the hard part is knowing what can be deleted and what can't. Delete the wrong thing and the system won't boot. tiny11builder's value isn't the technique (anyone can use DISM)—it's the community-tested "safe removal list" of components that can be removed without breaking stability.
That list took years of community iteration. Every major Windows 11 update requires recalibration.
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The Controversy: Slim vs. Secure
tiny11 has always been controversial, on two main points:
1. Security Updates
Debloated ISOs remove Defender and some security services. ntdevlabs suggests "install third-party antivirus afterward." Enterprise security teams don't accept this—Defender is the core of the Windows security ecosystem; removing it means losing EDR integration, threat intelligence, and real-time protection.
2. Microsoft's Stance
Microsoft doesn't support debloated Windows. tiny11 ISOs sit in a gray zone—technically violating the Windows EULA (modifying and redistributing system images)—but Microsoft has taken no legal action against ntdevlabs so far.
tiny11builder (the tool) is safer than tiny11 ISO (the product)—it doesn't distribute modified images, only provides tools for users to modify their own. Users own their Windows licenses and build the slimmed image themselves, carrying less legal risk.
That's why tiny11builder deserves more attention than the tiny11 ISO: tools are more sustainable than distributing finished products.
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Why 194 Stars
194 stars in a day isn't explosive growth, but it's steady. The audience is clear:
The WinUI upgrade is the main driver of the star growth—going from "command-line tool" to "GUI app" expanded the audience by an order of magnitude.
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A Deeper Perspective
tiny11builder's very existence is a signal: Windows 11's default configuration has drifted from what users actually need.
Microsoft keeps packing more into Windows—Copilot, Recall, Widgets, Xbox, Teams. Each has its justification, but together they bloat the system. Users are voting with their feet: either skip Windows 11, or upgrade and spend time trimming it.
tiny11builder is a product of that frustration. It's not a technical flex—it's users insisting that "the system should serve me, not the other way around."
When an OS's defaults need third-party tools to "correct," the OS's design philosophy has a problem. Microsoft should pay attention—194 stars isn't many, but behind every star is a user unhappy with Windows as it is.
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> Project: https://github.com/ntdevlabs/tiny11builder > Usage: Download the WinUI app → select an official ISO → check components to remove → build > Note: Only for users who already own a Windows 11 license