.DMG File Extension

File Type:
Mac OS X Disk Image

Having trouble opening .dmg extension? Don't panic! This page explains what dmg files are as well as suggests programs you may use to open dmg files. You can download these programs through this page.

What is a DMG file?

Dmg file extension has Mac OS X Disk Image file type, developed by Apple, which is associated with the "disk image files" category.

Associated with Mac OS X, the file is usually used by OS X software installers. It stores raw block data, which may be encrypted or compressed. Users can access the file via the Apple Disk Utility.

The DMG file format is typically used instead of the .IMG format, which has been previously used in Mac OS Classic. Even though DMG files aren’t meant to be used in Windows, users can still open them with Windows Daemon Tools.

To learn how you can open the given file, read the information below.

dmg file icon
File Type:
Mac OS X Disk Image
Disk Image Files

How to open DMG file?

Double click the dmg file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .dmg extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the dmg extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the dmg file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open DMG files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the dmg file as well. Download Universal File Viewer for your OS.

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