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JDiskReport enables you to understand how much space the files and directories consume on your disk drives, and it helps you find obsolete files and folders.

The tool analyses your disk drives and collects several statistics which you can view as overview charts and details tables.

This is ad- and nag-free uncrippled binary multi-platform software that is free of charge and that never expires.

What's New

Version 1.4.1:
  • This maintenance update fixes minor issues in the user interface and comes with updated support for recent OS X versions.


  • OS X 10.6 or later
  • Java 7 or later

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JDiskReport User Discussion

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Amaloney Member IconReview+8

Using OS X 10.9.2 and JDiskReport version 1.4.1, I get this msg -
Unable to load Java Runtime Environment.

This does not happen with version 1.4.0

Reply2 replies
Version 1.4.1
Hal Itosis

Same here.


I resolved it by re-installing JRE (jre-7u51-macosx-x64) from java.com

Al Maloney

Hal Itosis Member IconComment+37
Hal Itosis

I just checked, and this is up to version 1.4.0 now (since Dec. 2011).

Reply0 replies
Version 1.3.2
sjk Member IconComment+996

Hopefully the developer will release a Universal build so Rosetta isn't required on Intel systems

Reply0 replies
Version 1.3.2
Corpsecorps Member IconReview+761

I have a distinct bias towards Java apps because they're usually slow, ugly, non-Mac-like, etc., but this was a pleasant surprise.

While there are certain column list behaviors and other bits and bobs that annoyed me, such as the peculiarly basic and vastly unMac file dialog and the very unMac... kinda ugly "toolbar" icons, in most ways that really count it does it's job more than adequately.

It scanned one of my larger, more cluttered drives very quickly, and I must admit JDR's simple sorting, graphing and statistic functions and displays are nice. It has a surprisingly rich set of prefs.

While the appearance themes technically aren't terribly important, they're a great idea for a cross-platform app, and i'm sure had i been forced to look at icons and heirarchical lists that looked like windoze, i'd have torn into the app on that account.

I own DaisyDisk and I suppose i'll be sticking with it's OS X flash, but this unique little FREE app is impressive.

Reply0 replies
Version 1.3.1
Eric Member IconReview+33

Great ! .. Fast ! ... Easy to understand ...

I've tried a few other similar programs but jdisk is far superior in my mind. Great pie chart of your disk .. then you can hit the top 50 button .... and boom! ... you can see exactly what's eating up your hard disk space.

I hope this app stays around .. it's worth paying for ...

Reply0 replies
Version 1.3.1
syharris Member IconReview+49

I just discovered JDiskReport and have to agree that it's the best of its kind, emminently more useful and practical than the others of its type.
Grand Perspective and Disk Inventory X, for example, may offer a prettier graphical display of one's hard drive but so what, they're not as functional.
This one's extremely intelligently designed.

Reply0 replies
Version 1.3.1
Drdul Member IconReview+449

By far the best app in this category. I tried others like Grand Perspective and Disk Inventory X, but neither offers the features and functionality of JDiskReport. Highly recommended!

Reply0 replies
Version 1.3.1
Roro01 Member IconReview+0


It is perfect.

Reply0 replies
Version 1.3.1
makai Member IconReview+18

Simply my favourite tool when I need to find out where all the space has gone...

Scans my MB drive filled with 50GB in a bit more than 3 minutes.

Reply0 replies
Version 1.3a
kaufman Member IconReview+2

This is a great program. Very useful for finding huge files.

It would be nice if there were some way to go from the file or directory listing to a finder window. Right now, after I find a huge directory to prune, I have to manually navigate to the same directory in the finder. It would be nice if there was a way to do that automagically.

Reply1 reply
Version 1.3

I couldn't agree more that this is an excellent application but it's missing one very important feature --> "Reveal in Finder" or something along those lines. You can find which files are a problem, but if you want to delete or move the, you've got to open a Finder window and navigate to the file the long way and then do something with it. Only limitation with this program that I can see. I love the pie-chart display of file sizes (also the bar charts) - makes the most sense to me over all the other ways these kinds of programs show file sizes. Just needs one small update to make a world of improvement to what is already a great program.

user icon+0
Version 1.3.2
> 5 10


Current Version (1.x)


Downloads 17,440
Version Downloads 669
License Free
Date 06 Mar 2014
Platform Intel 64 / OS X
Price Free
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