DropDMG

DropDMG is the easiest way to create macOS disk images, which 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. 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 signed, 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.

• Added preliminary support for macOS 10.15 (which is now in beta).
• Worked around change in macOS 10.15 that could cause DropDMG to crash at launch.
• The Software Update… installer now works on macOS 10.15. If you’ve already updated to macOS 10.15, you can use it to download the new version but will have to install it manually, as described in the Updating From a Previous Version section of the manual.
• Worked around a macOS 10.15 bug where Finder didn’t save the window layout.
• Finder in macOS 10.15 currently does not display custom volume icons.
• macOS 10.15 removes support for Internet-enabled disk images, so DropDMG now makes that option unavailable when running on macOS 10.15.
• The Expand Image Automator action doesn’t work on macOS 10.15 because macOS 10.15 support for Internet-enabled disk images has been removed.
• Fixed a bug where DropDMG could crash when applying a layout if there had been a scripting error.
• Updated the Command-line tool section of the manual.
• Updated to Xcode 10.2.