Check the font license before extracting, converting, or redistributing. Many fonts bundled with macOS are proprietary and not permitted for redistribution.
While OpenType (OTF) is superior in many typographic features, the keyword focuses on TTF. However, many repack methods allow conversion to OTF as well. For this guide, we will focus on TTF due to its lower memory footprint and wider compatibility with old and new Windows systems. dmg font to ttf repack