Scanner’s Charts Can Save Your Disk From A Low Space Catastrophe [Windows]

Ads by Google

low disk spaceI’m a person who is very conscious and concerned with my available disk space. As someone who has experienced catastrophic performance issues due to not even having enough disk space for disk defragmentation to work properly, it’s something I find hard to forget. In other articles, you may have noticed the screenshots where I highlight the size and available space remaining on my local drive. I always have low disk space. I’m a hoarder.

When I’m not hoarding and saving everything I come across, I’m looking for quality disk visualization software (such as DiskSavvy). I’ve tried probably a dozen of them and none are easier and more straightforward than a little tool I’ve found called Scanner. Let me show you just what Scanner is capable of.

Scanner – Free & Portable

First and foremost, Scanner is free, portable, and only 243K in size. This alone should be reason enough to give it a spin, as you’ve got nothing at all to lose. Scanner should work just fine on every version of Windows from XP onward.

Download the archive and extract it to any folder you’d like. Run the executable and Scanner will immediately begin crawling all drives (including external and flash) on your system.

low disk space

You can interrupt the summary scan (as a scan of your entire system is called, denoted at the bottom left) and scan a single drive just by clicking on it or the blue icon next to it towards the left-hand side of the application’s interface.

Ads by Google

stop low disk space

As you can see in the screenshot above, I’ve scanned my C: drive. The scan can take a while to complete (depending on your read/write speeds and the size of your drive), but you can see the result: a neat little sunburst chart.

Using your cursor, you can now hover over chunks in the chart and the folder path responsible for that chunk of disk space will be shown beneath the title bar. The largest chunks obviously represent the most disk space. If you don’t know how a sunburst chart works, they layer out from the center. From the middle, the first rung of chunks are folders in your root directory (like “User” and “Program Files”). The chunks on the next rung outward are sub-directories under those respective directories.

At any given time, you can click on a chunk on the chart to bring the focus to that specific directory.

stop low disk space

As you can see, this allows you to pinpoint directories and disk usage more finely. On the lower right-hand side, there are three buttons: parent directory, back, and rescan folder. These should help you navigate around.

To the top left of the interface, and to the right of the drive letters, are buttons for zoom effects. Clicking the plus or minus sign allows you to respectively enlarge or shrink the size of the graph.

low disk space

The buttons to the top right-hand side of the interface will open the Programs and Features window within Windows or empty your Recycle Bin.

That really caps off the features for Scanner, but if you’re a visual person (like I am) then you can fall in love with understanding your disk space in this way. In one quick glance you’re able to see directories that are responsible for holding the most space on your disk. No numbers involved, just a visual. Clicking through the chunks is, in my opinion, always an easier way to detect over-sized folders versus looking at flat numbers.

Scanner proves that you don’t need a Swiss army knife just to clean up a bloated disk and deal with low disk space. Launch the application, hover and click through your largest visual chunks, and it’ll be practically impossible to miss a folder that shouldn’t be as big as it is.

What do you think of Scanner? Is it too simple or does it get the job done just right? Let me know in the comments!

Ads by Google
From the Web

9 Comments - Write a Comment



Coo tool too bad it isn’t for mac.



I think that I’ve been using this application for more than 10 years and I’ve tried all the alternative and it’s still my favorite one!


Alex Schnapps

Scaner is my favorite too.
btw, with reg files included in the archive, Scaner entry can are easily added to the context menu of Windows Explorer. Scan specific folders or drives will be even faster and more convenient.


Nevzat Akkaya

I usually use TreeSize for disk space analyzing, but this looks good too. Thanks.


Dr.Samuel Chandra Kumar

Great app! The portable works well on my 64-bit windows 7, thanks for the recommendation guys.


Lisa Santika Onggrid

It’s way more beautiful than TreeSize, and I do prefer this nice chart. Thanks for the recommendation.



Doesn’t Windows provide an automatic alert when a disk drive or a partition reaches a preset percentage of utilization? The last time I used Windows all I had to do was to right click on disk/folder, Properties to find out the amount of space used.

Yes, Scanner and other programs mentioned by posters do provide a pretty picture of drive utilization. But you have to remember to run them. If you don’t, you can find yourself in the old predicament of being out of space and not being able to do anything about it.


Loenja Selter

not a big fan of radial design myself, windirstat for me



I prefer SpaceMonger v1.4.0 it is much easier to read and see what is usung up your drive.

Your comment