Some notable features of macOS High Sierra include:
It’s a "tank" of an OS for older Macs that can’t upgrade further. However, if your hardware supports it, you should upgrade to macOS Mojave or later to maintain modern security and app support. Using macOS High Sierra in 2025 macos.high.sierra.10.13.6.dmg
This version focused on "under the hood" improvements that changed how Macs manage data and graphics: Some notable features of macOS High Sierra include: