On Linux/macOS:
sha256sum kali-linux-2025.1-installer-amd64.iso
On Windows (PowerShell):
Get-FileHash .\kali-linux-2025.1-installer-amd64.iso -Algorithm SHA256
7z a -mx=9 -mmt=on kali-compressed.7z kali-linux.iso kali linux iso file highly compressed download
7z x kali-compressed.7z
Do not download a pre-compressed ISO from YouTube, third-party blogs, or torrent aggregators like Pirate Bay.
If you need a truly small Kali, use the Kali NetHunter or Kali Linux Light (minimal desktop) — around 1.5 GB before compression. On Linux/macOS: sha256sum kali-linux-2025
Download: https://www.kali.org/get-kali/#kali-light
Flags explained: