DropDMG
DropDMG
3.6

4.6

DropDMG free download for Mac
21 October 2020

Quickly create disk image (dmg) archives.

Overview

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.

What's new in DropDMG

Version 3.6:
  • Updated the user interface for macOS 11 Big Sur:
    • Redesigned the application icon.
    • The main window uses the new inline title bar style, the toolbar defaults to icon-only mode and supports the new large icon style, and the toolbar icons have been updated.
    • The Preferences window uses the new, centered toolbar style and has updated icons.
    • Table views in the Preferences window have been updated.
    • The user interface now reflects the fact that macOS 11 removes support for creating NDIF disk images.
    • The Layouts section of the manual has updated guidance on background picture dimensions that takes into account the window layout changes in macOS 11.
    • Updated the Custom volume icon feature for Big Sur.
    • Worked around a macOS bug that prevented progress bars from being drawn.
    • Worked around an animation glitch.
  • Added support for LZMA-compressed disk images on macOS 10.15 and later. This format is even more tightly compressed than bzip2, with slightly slower compression speed and much faster decompression.
  • When using the dropdmg command-line tool, you can now specify additional parameters in combination with --config-name to override the values in the configuration. (This also works with the corresponding AppleScript command and parameters.)
  • Configurations now show a Gatekeeper badge on the icon when the disk image is code-signed.
  • Various operations that used to require multiple passphrase prompts when dealing with an encrypted disk image now require only one.
  • DropDMG no longer lets you try to codesign encryped disk images, as macOS does not support that.
  • DropDMG now requires macOS 10.9 or later.
  • When encountering various kinds of file permissions errors, DropDMG will now recommend that you grant it Full Disk Access.
  • Added more fine-grained control over DropDMG’s layout checks, so that it can still ensure that icon sizes and positions are correct even if you’ve told it to ignore a Finder error that causes the window size to be slightly off.
  • DropDMG no longer considers it to be an error if an icon position is off by only a fraction of a point, which can happen with certain combinations of file types and Finder view settings.
  • Worked around a bug in macOS 10.15 that could cause a spurious "Permission denied" error when using the Change Image Passphrase…, Convert Image/Archive…, or Verify Image… command.
  • Removed support for Growl, as all supported macOS versions now have Notification Center.
DropDMG for Mac Old Versions

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How would you rate DropDMG app?

49 Reviews of DropDMG

5
Aargl
05 February 2020
Version: 3.5.9

Most helpful

A must have for anything about disk images! The only app I could find that tells you to what algorithm a dmg was created — then you can decide if it's worth converting or not. It plays seamlessly between the usual formats. Quite perfect!
(1)
5
Aargl
05 February 2020
Version: 3.5.9
A must have for anything about disk images! The only app I could find that tells you to what algorithm a dmg was created — then you can decide if it's worth converting or not. It plays seamlessly between the usual formats. Quite perfect!
(1)
5
sbenitezb
19 August 2018
Version: 3.5.4
Switched from iDMG because DropDMG is still well maintained. Great application.
(3)
Cowicide
05 December 2016
Version: 3.4.3
I don't know what's going on, but it's having trouble with 10.12.1 macOS Sierra. Took a very long time to create a blank, encrypted DMG (that wouldn't eject until I forced it in Terminal) while Apple Disk Utility did it in seconds without any trouble. Same thing with a different computer as well.
(0)
Show comments (2)
5
Bluenut
06 November 2016
Version: 3.4.3
Great utility - more than ever since 10.12
(0)
Jimw
24 August 2016
Version: 3.4.1
This seems to be mostly a GUI version of the hdiutil command, that is part of the OSX Unix command structure. Those who want to try their hand at it can create a Service using Automator and the "Run Shell Script" action item with the following command for a simple version of this (ignore brackets):
{hdiutil create -fs HFS+ -srcfolder "__OBJ_PATH__" -volname "__OBJ_NAME_NO_EXTENSION__" "__OBJ_PARENT_PATH__/__OBJ_NAME_NO_EXTENSION__"}

I used a free, old but reliable product called "On My Command" from Abracode to get this service. It is item 509 in the command listings. I have been using it for years. It makes it very handy and fast to have as a Service as opposed to an App.
(0)
Panocha
25 May 2016
Version: 3.3
Fake/bad link. Get directly from C-Command; http://c-command.com/downloads/DropDMG-3.3.dmg
(0)
5
polocanada
05 November 2013
Version: 3.2.3
Can also do Image compacting, although not so convenient to use but it does the job.
(0)
4.5
Buggles
24 May 2013
Version: 3.2.2
I think we can keep this one fairly short... The functionality is superb. It works and once its set up I can't imagine for a second it could be any easier to use. But by all the gods its a user experience train wreck. You will figure it out, you will absolutely feel that you have spent your money wisely... you will, at points, think the developers could think about the information architecture of the app. Buy it, there's nothing better.
(2)
Show comment (1)
5
EndoLab
26 March 2013
Version: 3.2.1
I am upgrading my former comment of DropDMG. This software is not expansive at all. Just look at the help page: http://c-command.com/dropdmg/manual-ah/ You can try it one month, definitely not the MAS. The devoloper work on MAC since at least 12 years. If we want good product we have to pay for it. I don't work for free. The support seems very good to. I bought it.
(5)
5
Donmontalvo
29 November 2012
Version: 3.2
Gets better with time, very useful and reliable - and great support!
(1)
EndoLab
09 November 2012
Version: 3.2
expensive
(1)
4.5
Surfspirit
07 November 2012
Version: 3.2
Requirements are wrong, it has 64 bits support, it does not require it, also runs on 32 bits Macs!
(1)
Show comment (1)
Jimw
07 November 2012
Version: 3.2
I occasionally make DMG files so seeing this product updated interested me. That was until I looked at the price and saw some of the other comments, which seemed to portray that that the product comes with mixed reviews. Given that this product does only one thing, create DMG files, and its price, it seems to me to be targeted to a niche market: the professional that regularly creates DMG files for distribution; or the individual who wants their DMG files to look really professional and is willing to pay the price to do this. But for the rest of us, that occasionally makes DMG files for personal use, or to distribute to a few acquaintances, there are other, less expensive solutions on the market to accomplish this that also create reasonably attractively files. So, if you need all the bells and whistles that this product product provides, and the price does not bother you, go for it. Otherwise I suggest you browse the alternatives listed above.
(0)
5
nullmaster
06 June 2012
Version: 3.1.3
I've been using DropDMG for years, and for those who need a reliable, robust, automated workflow for processing disk images, this software is worth every penny and more. Technically, everything DropDMG does can be accomplished for free using Disk Utility, Terminal, and a lot of time to wash, rinse, and repeat the process. For one-off disk image processing, I often use Disk Utility because I don't need an end-to-end flow for that image. When going through even more than just a few images, though, DropDMG is an incredible time saver. Combined with Michael Tsai's top-notch support, I wholeheartedly recommend this software and his other products (such as SpamSieve) if they are applicable to your workflow.
(0)
Derekcurrie
09 May 2012
Version: 3.1.3
$24. Or you could DIY with Apple's FREE Disk Utility. It's in your Utilities folder. Of you could automate it yourself with Apple's FREE Automator app using the "New Disk Image" command. Try it! It's not hard! It's FREE!
(3)
Show comments (2)
4.5
Surfspirit
30 August 2011
Version: 3.0.7
One of the best apps I ever found, well built, easy to use and very flexible! In a nutshell: - Fast DMG Conversion - It auto splits DMG files in selectable sizes, for example DVD maximum size. - It auto compress other DMG so it gets smaller ;) - Easy saves to a pre selected folder, auto name new DMG files. - The only app I tried that shows estimated time, and info resume of each DMG creation/conversion. - It has great batch support, it even can auto delete de old files after conversion/creation. - It also does ZIP if you want to, and cdr format so it's more compatible with windows etc,...
(1)
Donmontalvo
10 June 2011
Version: 3.0.7
Before I review, I'd like to resolve an issue where background images do not show up. I tried JPG, PNG, etc. I tried to sign on to the forum. No luck. I just emailed the developer. I bought this but may need to request a refund if it can't do such a basic thing as placing a background image in a layout. Hoping it's an easy fix, or maybe I'm doing something wrong? :) Don
(1)
Show comments (5)
5
anonymous-mule-4061
17 May 2011
Version: 3.0.6
This is really an impressive program that works pretty straightforward and simply yet can do a lot of things when you look under the hood (read through the help). It is great for working with various kinds of archives--dmg's, zips, etc.)--making them, converting them, burning them or what not.
(1)
3
Corpsecorps
03 October 2010
Version: 3.0.2
Gave version 2, 5 stars. Version 3 has more features and a new interface so it deserves a new evaluation including them. The features which were available in version 2 are even better and still deserve 5 stars However, I'm still finding the relationship of Layouts to configurations to the final creation dialog choice awkward. As the automated replacement of custom positioned icons in a layout requires filenames EXACTLY matching those in the folder from which the DMG is created, the feature is fairly useless except to a Dev releasing software & updates where the same set of files will be used each time. While it's nice having a grid to to allow easy alignment when positioning icons, there's no way to set the grid to have a correlation to that of the finder to allow proper alignment of icons with background images. This CAN actually be accomplished by nudging except the grid scale cannot be changed. All my attempts to accomplish the reverse; to create graphics in such a way that the icons placed automatically by DropDMG would happen to align with them, failed. (e.g. I created a background image with 6 regularly placed spaces for icons, but instead of the 6 icons falling into those spaces in my 3 x 2 grid, DropDMG decided to allow the icons to bleed off the background image in a 2 x 3 arrangement) The Layout setup allows the choice of the position of the upper left corner of the final DMG window, but lacks a way to specify the SIZE, auto-conforming it's size to that of the background image. Not always desirable. Unlike the finder itself, filenames in DropDMG's layout do not appear to be able to extend to 2 lines. I hope the layout features of DropDMG are enhanced to match the excellence of the DMG creation ones. I still use this for ALL archives not requiring a custom layout and/or license.
(0)
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Corpsecorps
24 September 2010
Version: 3.0.2
Haven't tried to make use of layouts till now. Haven't had much luck. When I first dragged an image to the background box, I got a huge error dialog full of code. Reread the instructions. On the next run everything seemed to go fine, but when I clicked a finished DMG file, the icon wasn't positioned at all where it had been in the layout. The whole layout UI could use some polish.
(0)
Show comment (1)
4
Bigboysdad
11 September 2010
Version: 3.0.2
I've been using this for the last 5 years for instantly backing up folders and particularly changed/ modified files to encrypted disk images for offsite storage, especially those raw files which I may suddenly need and which take up too much room on my HD. Using Drop DMG for this is not enough though as you WILL need a disk cataloging program to scan your DMGs, for later file search and retrieval. Solid, reliable and time saving software. And its ability to instantly segment large sized DMG's into DVD sized chunks for burning at a touch of a button is great too.
(0)
Corpsecorps
07 September 2009
Version: 2.8.6
Excellent! I had just noticed the minor icon snag with Snow Leopard, and here's a fixed version waiting.
(1)
St8181
06 September 2009
Version: 2.8.6
IMO this is way too expensive considering the free/donationware alternatives, such as DMGCanvas
(1)
5
Iconz113
04 September 2009
Version: 2.8.6
great app
(2)
5
Corpsecorps
14 March 2009
Version: 2.8.5
Pretty much the only thing i use to archive my stuff. It's a piece of cake to set up your presets and after that, what could possibly be easier than just dropping what you want to archive on it? Not that it really needs anything more, but a year without an update? I hope it's not being ignored altogether! Okay, there's free stuff around and $20 might be a wee bit steep, but i've had this since there wasn't much, and it's the Best!
(1)
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Corpsecorps
09 June 2008
Version: 2.8.5
Would be nice if this could create a .DMG which when clicked would always open with a specific view, background image, and window size intact. .
(1)
5
Shotgunweddings
14 November 2007
Version: 2.8.2
Ya, another review by me on this one again! What can I say, it's the BEST of class! Leaves off where Apple Disk Utility falls behind! Well worth it's price if you use it daily! Superb product Michael Tsai , keep up the great work! I'd give it a 10 out of 5 stars!!
(0)
5
Minimarc
04 August 2007
Version: 2.8.1
Very easy to use. Good!
(13)
5
Shotgunweddings
01 August 2007
Version: 2.8.1
So far no other tool has the same power and flexibility. Not to mention for those times you need something other than a sparse image, it's very good at compressing disk images too. Smaller images than Toast or Apple's Disk Utility using zlib compression. Works flawlessly on my iMac (MacIntel) running OSX 10.4.10(11). DropDMG is well worth it's weight in gold Michael Tsai ! Great work !
(0)
Pxl
16 May 2007
Version: 2.8
This has become one of my favorite programs of the year. I love it. I'm hoping a future release will include and easier way to add backround images like the same feature you have for the volume icon. And icon size adjustment.
(0)
5
talazem-2
22 February 2007
Version: 2.7.9
I just purchased DropDMG after trying it for a few days as part of my online backup system onto Amazon S3. What sold me was the ease of use, Automator support and the encryption. I made an Automator set using Drop DMG and JetS3t (through the scripting option in Automator) to securely back up my stuff onto S3. It ran yesterday for the first time, flawlessly! Not to mention the excellent support from Michael Tsai, both pre- and post-sale. Thanks!
(0)
5
St00pid-M0nk3y
14 July 2006
Version: 2.7.8
This is by FAR my favorite DMG app. Thanks for this awesome software!
(0)
5
Anonymous
22 September 2005
Version: 2.7.2
I've been using DropDMG for years now and I've never had any problems with it. This little app is a real gem. Kudos to Michael Tsai!
(0)
Anonymous
31 August 2005
Version: 2.7.1
Aahhh! Got a problem with 2.7.1 (may have begun with 2.7) Very often when i have more than one .dmg creation under way simultaneously, at least one will get an: Error FSPathMakeRef (-35) part way through. If i start it over with exactly the same settings, it works fine.
(0)
Show comment (1)
4.75
Anonymous
24 June 2005
Version: 2.6.3
I love this gadget! Hardly ever need Disk Utility now.
(0)
Anonymous
20 June 2005
Version: 2.6.1
it phones home, and it doesn't do anything more than disk utility? and it costs money? I can't see why you'd buy this
(0)
Show comments (3)
5
Anonymous
01 May 2005
Version: 2.6
coool. thanks for the extra NDIF support. now i can emulate unfettered.
(0)
2.75
PRESS
30 January 2005
Version: 2.5.2
@Michael Tsai: DropDMG v2.5.2 asks me for my Admin-password each time i try to start it. And it tries to phone home. There is no logical explanation for this unacceptable behaviour. There are no preferences to turn this off. Stop this or you will find your application on a spyware-list. You've been warned!
(0)
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Anonymous
24 January 2005
Version: 2.5.2
can it make ISO formats? please?
(0)
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Anonymous
09 December 2004
Version: 2.5
"The StuffIt format is proprietary, so StuffIt needs to be installed if you want DropDMG to convert to/from that format." Yet another reason to stay far, far away...
(0)
Show comment (1)
Jimw
07 December 2004
Version: 2.5
Question: Is this destined to supplant Stuffit? Just asking. At least it is something to think about.
(0)
Show comments (6)
4.5
Anonymous
07 December 2004
Version: 2.5
nice! this is the only alternate dmg utility worth bothering with.
(0)
4.75
Anonymous
30 November 2004
Version: 2.2
Excellent application, very intuitive, a bit pricey but works as advertised, and much more.
(0)
5
03 May 2003
Version: 2.1
The ability to segment large disk volumes or folders into burnable pieces makes this a very worthwhile tool. On top of that, there is encryption and/or compression.
(0)
Anonymous
03 May 2003
Version: 2.1
Corrections to my last post: The 3X includes the original source, so only 2X is needed for the imaging, until the temp.dmg is automatically deleted. I guess the other reviewers were talking about other freeware, not the OS's free capability.
(0)
4.25
03 May 2003
Version: 2.1
Great app! Other people's comments about free functionality already included in OS are not right. This program can for example split a large Restrospect backup file into 700MB or 4.3GB chunks to burn onto optical media. Since Restrospect doesn't yet support direct burning of segments to firewire optical drives, this feature itself is a Godsend! The icing is that it compresses beyond what Retrospect manage to do on the fly. Only one request: an abort button, to cleanly stop an ongoing imaging job. Also would be nice if it didn't need as many intermediate files. A temp.dmg is first written, and then the final dmg. I don't know if anything can be done about that, but it currently requires 3X the disk space to be free somewhere, of whatever you are trying to image. You can reduce it to 2X by deleting the original source once the temp.dmg is finished, but that is a bit risky.
(0)
Anonymous
25 April 2003
Version: 2.1
Take a look at what DropDMG can do before slamming it for not being free. The free image creators don't give you access to as many options, don't have DropDMG's time-saving features (recent folders, preferences overrides, etc.), and aren't AppleScriptable. DMG Maker does support license agreements, but not rich text ones.
(0)
3.5
King Bob On The Cob
25 April 2003
Version: 2.1
Well Aladdin tries to charge for DropZip and you can get free ones of that too. This just allows you to make compressed internet-ready archives very easily.
(0)
1
The True Review
24 April 2003
Version: 2.1
Why anyone would wish to spend $10 for an application that is also available freely is beyond me. DMG maker for OSX is free and does the same basic task. There are also other apps out there which do this relatively easy task without having to charge for it!
(0)
Show comment (1)
$24.99Buy Now

4.6

App requirements: 
  • Intel 64
  • OS X 10.9.0 or later
License: 
PaidOne-Time Purchase

Downloaded & Installed 101,377 times

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