DMG Files are Mac-formatted Disk Image Files especially correlated with Macintosh OS X by Apple Inc. These files are mountable disk images that are used for installing any application on Mac computer, and it can consist of any type of file. DMG files can create a problem while being accessed / opened on a Windows OS.

Mac .DMG file extension denotes imaged copy of a disk; it falls into the category of Disk Image file.

All versions of DiskUtility.App

Developed and Owned by Apple.

It only has a single MIME type that is application/x-apple-diskimage

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DMG files are created by Macintosh and may be open using this application depend on version of Apple software.