dmg

.dmg — Apple Disk Image

Apple Inc. · 2000

Developer

Apple Inc.

What is a .dmg file?

DMG (Apple Disk Image) is the standard disk image format used on macOS for distributing software. When you download a Mac application from the internet, it typically comes as a DMG file. Opening a DMG mounts it as a virtual drive on your desktop, allowing you to drag the application to your Applications folder. DMG files support compression, encryption, and checksumming for secure software distribution.

Programs That Open .dmg Files

Platform	Program
Windows	7-Zip	Free
	TransMac	Paid
macOS	DiskImageMounter	Free	Official
	Finder	Free

Common Problems with .dmg Files

⚠️ Cannot open .dmg file

Install one of the recommended programs listed above. For a free option, try the first free program in the list.

⚠️ .dmg file is corrupted

Try re-downloading the file. If the file was transferred, ensure the transfer completed without errors.

Frequently Asked Questions

What program opens .dmg files?▼

.dmg files can be opened with several programs. 7-Zip is one of the most popular choices.

Is .dmg a safe file format?▼

Generally yes, .dmg files are safe to open with appropriate software.

Can I convert .dmg to another format?▼

Yes, there are many online and offline tools available to convert .dmg files. Check the conversion section above for specific methods.

Technical Details

Apple Disk Image files use the application/x-apple-diskimage MIME type and were first introduced in 2000 by Apple Inc.. The file can be identified by its signature: 78 01 73 0D (compressed).

Did You Know?

Apple Disk Image was first released in 2000 by Apple Inc.

Security Information

.dmg files are generally safe to open. However, always ensure your software is up to date to protect against potential vulnerabilities.