.DMG

Apple Disk Image

Learn about .dmg files - Apple Disk Image. Find software to open, compatibility information, and alternatives.

Archive 293 Searches File Extension Details
.DMG
Apple Disk Image

What is a .dmg file?

File Extension Details

A DMG file is an Apple Disk Image file, a common format used on macOS to distribute software. It's essentially a digital container that holds compressed software installers, applications, or other files. Think of it as a virtual disk drive. When you open a DMG file, macOS mounts it as a volume on your desktop, allowing you to access its contents. This makes it easy to install applications or copy files to your computer. DMGs often include compression to reduce the file size for easier downloading and distribution. They can also be password-protected for security. The format supports various features like checksums to ensure data integrity and resource forks, which are specific to macOS. Once you've finished using the contents of a DMG file, you can unmount it, which removes the virtual disk from your desktop. DMGs are a standard way to distribute software and data on macOS, providing a convenient and secure method for packaging and delivering files.

Software Compatibility

Programs that can open and work with .dmg files

Windows

Compatible Applications

7-Zip Compatible
PeaZip Compatible
HFSExplorer Compatible
PowerISO Compatible
UltraISO Compatible

macOS

Compatible Applications

Disk Utility (built-in) Compatible
Apple DiskImageMounter (built-in) Compatible
The Unarchiver Compatible
StuffIt Expander Compatible

Linux

Compatible Applications

7-Zip (via p7zip) Compatible
AcetoneISO Compatible
DMG2IMG (command-line tool, requires conversion to ISO first) Compatible

Mobile

Mobile Applications

No software information available

Frequently Asked Questions

About .dmg files

To open a .dmg file, you need compatible software. Here are some options:

  • 7-Zip
  • PeaZip
  • Disk Utility (built-in)
  • 7-Zip (via p7zip)

To convert a .dmg file to another format, you can:

  1. Use compatible software Many programs that open .dmg files also allow you to save or export them to different formats.
  2. Try online conversion services: Websites like Zamzar, CloudConvert, or Online-Convert allow you to convert files between different formats without installing software.
  3. Specialized conversion tools: Search for '.dmg converter' to find tools specifically designed for this file type.

  1. Verify the file extension is correct:
  2. Update your software:
  3. Try alternative software:
  4. Check for file corruption:

Like any file type, .dmg files can be safe or potentially risky depending on their source:

  • Always scan files with antivirus software before opening
  • Keep your operating system and applications updated.
  • Be especially cautious with executable file types

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