NTDEV has unveiled the Nano11 Builder, a groundbreaking tool designed specifically for Windows 11 enthusiasts who enjoy experimenting with the operating system. This innovative release allows users to distill Microsoft’s latest OS down to its essential components, marking a significant advancement from the developer’s previous Tiny11 iterations.
The Nano11 Builder achieves remarkable efficiency by drastically reducing the official installer disk image from Microsoft. Users can expect an ISO that is “up to 3.5 times smaller” than the original version. For instance, a standard Windows 11 ISO, which typically weighs in at 7.04GB, can be transformed into a mere 2.29GB after utilizing the PowerShell script provided by NTDEV. Moreover, if users start with the Windows 11 LTSC as their source ISO, the final installation size can shrink to as low as 2.8GB.
However, it is essential to approach Nano11 with caution. The developer characterizes it as “an extreme experimental script designed for creating a quick and dirty development testbed.” While it holds potential for virtual machine (VM) testing, it is not intended for users seeking a compact Windows 11 installation for daily tasks.
The Nano11 Builder meticulously strips away what the developer refers to as “fluff.” This includes elements such as Windows Hello packages, unnecessary drivers, precompiled .NET assemblies, IME components, and even wallpapers. The result is a remarkably streamlined Start Menu, reflecting the tool’s focus on minimalism.
Size is important
Social media buzz surrounding Nano11 suggests that users can achieve an installation footprint as small as 2.8GB, although this outcome depends on the specific version of Windows 11 being utilized. Achieving this minimal size requires additional steps beyond the initial installation process.
For example, after installing the Nano11 version, the system initially occupies 11.0GB of the 20GB allocated virtual disk space. It is only after executing the ‘Compact’ command on the C: drive using LZX compression and removing the virtual memory page file that the installation size can be reduced to approximately 3.2GB.
The nano11 script used on a Win11 LTSC image leads to an even better result! This will be perfect for when you need an ISO that can be installed in like 5 minutes and without any (and I mean it) fluff https://t.co/iJXGKahIx4
— September 9, 2025
When starting with the Windows 11 LTSC ISO, NTDEV has successfully demonstrated the potential for a mere 2.8GB installation, as highlighted in a recent post on X. This showcases the impressive capabilities of the Nano11 Builder and its appeal to those looking for a swift and efficient Windows 11 experience.
