.DMG File Extension

Apple Disk Image

General Information

Title DMG File Extension
Extension .dmg
Full Form Apple Disk Image
File Type Disk Image File
Developer Apple Inc.
MIME Type application/x-apple-diskimage

File Function

Primary Function Mount virtual disk
Additional Functions Software distribution, Data backup
Features Compressed, Encrypted

File Characteristics

Quality High integrity
Supports Layers N/A
Supports Transparency N/A
Editable Yes, with tools

Use Cases

Software Installation Yes
Data Archiving Yes
System Recovery Yes

Security and Practices

Security Risks Malware distribution
Best Practices Scan for viruses, Verify source

Historical/Version Information

Initial Release 1980s
Latest Version As per macOS

Associated Types

Similar Extensions .iso, .toast, .img

Software Compatibility

Software Usage Policy OS Compatibility
macOS Finder Built-in macOS
Disk Utility Built-in macOS
7-Zip Free Windows, Linux
TransMac Paid Windows