DMG File - opening and understanding

Did your computer fail to open a DMG file? We explain what they are used for and recommend software that we know can open or otherwise handle your .DMG files.

What is a DMG file?

A .DMG file is a Macintosh Disk image file. A DMG file contains an exact copy (image) of a hard drive and can be treated as such by the Macintosh OS X operating system. These files can be created with Disk Copy, burned to a CD, or even mounted as a normal volume on Macintosh computers.

Some .dmg files may be encrypted in addition to being compressed, for added file security. These files are often used by software installers that download applications from the Internet to a user's computer.

Software on non-Macintosh systems can extract the content from these files as well.

How to open DMG files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension DMG for different purposes. We have identified 2 DMG openers for Windows that is compatible with this specific type of DMG file.

Programs that open these files

BitZipperBitZipperVerified
PowerArchiverPowerArchiverVerified
We have not yet verified any programs for Mac that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!
We have not yet verified any web services that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension DMG

While we know of one file format using the .DMG file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .DMG file.

Various viewers for this file format

These apps are known to open certain types of DMG files. Remember, different programs may use DMG files for different purposes, so you may need to try out a few of them to be able to open your specific file.

PowerISOPowerISOUser submitted
WinRARWinRARUser submitted
Free File ViewerFree File ViewerUser submitted
Final Media PlayerFinal Media PlayerUser submitted
IsoBusterIsoBusterUser submitted
7-Zip7-ZipUser submitted
PeaZipPeaZipUser submitted
Hamster Lite ArchiverHamster Lite ArchiverUser submitted
iTunesiTunesUser submitted
HFSExplorer - A tool for accessing HFS/HFS+/HFSX hard drives and disk imagesHFSExplorer - A tool for accessing HFS/HFS+/HFSX hard drives and disk imagesUser submitted
We have not verified any software that we know for certain will work with DMG-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with DMG-files. If you know one, please use the 'Suggest a program' link below and tell us about it!