How to Make a macOS DMG Installer with a Custom Background

Tue, 12 May 2026 20:10:17 +0800

This post introduces DMG Maker, a small tool for creating macOS DMG installers with custom backgrounds, icon placement, and destination shortcuts.

I’ve just open-sourced DMG Maker, a tool that simplifies the process of creating professional macOS DMG installers.

Why DMG Maker?

Creating a DMG with a custom background usually involves manual AppleScripting or tedious Finder configurations. DMG Maker automates this using a single command.

Key Features

Auto-Symlink: Automatically detects file types (like .dictionary or .app) and links them to the correct system folders.
Custom Aesthetics: Easily apply backgrounds and position icons via coordinates.
Open Source: Check it out on GitHub.

Check out the project to start making your own installers!

I used the same kind of DMG distribution flow for dictionary-style macOS tools such as Ġabra Maltese Dictionary for macOS.
If you are packaging a keyboard layout instead of an app, see ABC Custom Keyboard.

Bash on Jingyuan

How to Make a macOS DMG Installer with a Custom Background

Why DMG Maker?

Key Features

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