DropDMG

DropDMG allows users to quickly create .dmg archives.

Disk images pack entire folders or disks into a single compressed file, either for transport across the Internet or simply for backup. They are Apple's preferred format for distributing Mac software. Disk images are also the only archive format whose contents you can directly access in the Finder.

DropDMG is the easiest way to create Mac OS X disk images, as well as cross-platform archives. Just drag and drop a folder or file and you're done. Or, you can drag an existing disk image or archive onto DropDMG to convert it to any of the other supported formats or to burn it to CD or DVD.

DropDMG supports advanced options such as encrypted and segmented disk images, WYSIWYG layout with background pictures and custom volume icons, and rich-text license agreements in multiple languages. There are many time-saving features, and it can also be automated via AppleScript, the command-line, and Automator.

• DropDMG is now fully compatible with OS X 10.11 El Capitan.
• Added support for LZFSE-compressed disk images, which are smaller than the standard zlib-compressed disk images yet twice as fast to encode and three times as fast to decode (requires OS X 10.11).
• When you’re editing a license or layout, DropDMG now adds a menu to the Fonts panel for choosing the system font, since there is otherwise no way of choosing San Francisco or the proper version of Helvetica Neue to match the user interface.
• Updated the Create OS X Install Disk instructions for OS X 10.11.
• It is now possible to enter segment sizes larger than 50 GB in the Preferences window. (Previously, this was only possible via script.)
• Added segment size and blank disk image preset for 100 GB BD-R XL discs.
• Modernized code for the Xcode 7 compiler and the OS X 10.11 SDK.
• The Command-line tool is now installed in a different folder on OS X 10.11 for compatibility with System Integrity Protection.
• Added support for App Transport Security on OS X 10.11.
• The About, Software Update, and help windows now use the San Francisco font on OS X 10.11.
• Worked around an OS bug that could cause the volume to be busy when creating a device image on OS X 10.11.
• Worked around a bug in OS X 10.11 that could cause a crash during Software Update....
• Added some logging and esoteric preferences to work around problems hiding/showing the Finder’s status bar.
• Improved the Sharing Licenses and Layouts section of the manual.
• Fixed a bug where Software Update... would continue offering updates in the same session you had held down the Option key.
• Removed inadvertent debug logging for the Append version number feature.
• Updated the French, Italian, Portuguese, and Spanish localizations.