create-dmg

The tool generates a macOS disk image (DMG) for a finished application with a single command, handling layout, icon placement, and optional code signing automatically. It accepts the path to an *.app* bundle and produces a DMG named with the app’s title and version, supporting macOS 10.13 or newer. Users can customize the DMG title, control whether the version appears in the filename, and optionally supply a specific signing identity; a flag also exists to skip signing entirely, which is useful in continuous‑integration pipelines.

License files placed in the working directory are incorporated as a software license agreement that must be accepted before the image mounts, and the resulting DMG includes a polished visual presentation of the app’s icon. The command‑line interface is intentionally minimal, offering only a few straightforward options rather than extensive configuration.

Developers who need to distribute macOS applications outside the App Store can install the package globally via npm (requiring Node.js 20+) and invoke it directly from the terminal, streamlining the creation of professional‑looking DMGs without additional GUI tools or custom scripts.