| Type | Typical Size | Description | |------|--------------|-------------| | Official Windows 10 64-bit ISO | 4.5 – 5.5 GB | Full version from Microsoft. | | Compact OS (built-in) | ~3.5 – 4 GB | Uses /Compact flag during installation. | | Repacked WIM/ESD | ~2 – 3 GB | Lossless, but requires deployment tools. | | Highly compressed archive (7z/RAR) | 1.2 – 2.5 GB | Must be extracted to an installer or USB. | | "Lite" modded ISO | ~800 MB – 1.5 GB | Removed many features, often unstable. |
: Windows Defender, firewall configurations, and built-in backup tools. windows 10 64 bit highly compressed
If your system is already installed and you want to save space, you can enable Compact OS on the fly. | Type | Typical Size | Description |