Version 3.6.9 of DropDMG is now available.

DropDMG makes it easy to create a professional disk image for your app. Disk images pack entire folders or disks into a single compressed file, either for transport across the Internet or simply for backup or archival. They are Apple’s preferred format for distributing Mac software and the only archive format whose contents you can directly access in the Mac Finder—no extraction or third-party software required.

Deliver your Mac app on a .dmg file with a software license agreement, a custom volume icon, and a precise icon layout atop a Retina-optimized background picture. Customers can install simply by dragging and dropping the app onto the convenient Applications folder link. Code-sign your .dmg so that macOS knows it can be trusted after download.

This is a free update for owners of DropDMG 3.0 that includes the following enhancements:

• Fixed a bug where converting a disk image would in some cases fail with an incorrect error about the destination folder being invalid.
• Worked around a bug in macOS 15 where sometimes the system help viewer would not open the right help page. DropDMG will instead open help files in the user’s Web browser.
• Tried to work around a macOS bug that could cause it to incorrectly report the DropDMG application file as damaged.
• Made some changes to prevent DropDMG from triggering local network privacy prompts.
• Improved the following sections of the manual:
  • Command-line tool
  • Format
  • Signing
• When you click an esoteric preferences link to enable or disable debug logging, the change now takes effect immediately, without having to restart DropDMG.
• The diagnostic report now includes information about the app’s logs, the crash logs folder, and components that could cause AppleScript errors.
• Diagnostic report files are much smaller, as they no longer include excerpts from the verbose system console log, only from DropDMG’s own log files.
• Removed various code that is no longer used.

DropDMG 3.6.9 works with macOS 10.13 through macOS 15. Older DropDMG versions are available for older versions of macOS. In-depth information about DropDMG is available in the manual.

If you enjoy using DropDMG, please take a moment to review it on the Mac App Store, MacUpdate, or Product Hunt or to mention it on Twitter, Mastodon, Instagram, Facebook, or your own site. We’d really appreciate it.

Update (2025-05-28): DropDMG 3.6.9 has been submitted to the Mac App Store and is awaiting approval from Apple.

Update (2025-05-28): DropDMG 3.6.9 is now available from the Mac App Store.