If you are writing a guide or a message to someone else, here is a concise text you can use: How to get TTF fonts from a DMG file: Open the DMG : On Mac, double-click to mount it. On Windows, use HFSExplorer to extract the contents. Locate the Font
If you have a .dfont or a Mac-specific suitcase, you’ll need a converter to turn it into a standard .ttf (TrueType Font). Option A: Online Converters (Fastest) dmg font to ttf