Trash Your Duplicate Files with Auslogics Duplicate File Finder

Saikat Basu 06-09-2009

Trash Your Duplicate Files with Auslogics Duplicate File Finder Thumbnail3With human memory being what it is, we hardly realize that we stack up a pile of duplicate files on our hard disks. Downloading and saving files is no big deal. Especially with the kinds of bandwidth and hard disk capacities we enjoy these days. But gradually, over the days and months each byte accumulates like the proverbial drop in the ocean.


Most of us are pack rats of the digital age. Hoarding downloads, never to see them again. For instance, I had a habit of downloading e-books by the dozen – with each came a promise that I would read them all. Of course, I never got around to it. And soon, I came to realize that I had stacked up quite a few duplicate files.

It is only when we reach the brim of our hard disk capacity, we start to look for ways and means to shed some of the junk. An audit of our system will throw up at least a handful of files saved twice over. Image files 5 Ways to Find Duplicate Image Files on Windows PC Duplicate image files are unnecessary and a waste of space. These tools will help you find and eradicate the image duplicates that are wasting space on your data drives. Read More and wallpapers spread across multiple folders. Duplicate songs, documents, outdated installation files, each contributing to sucking up space. Giving our systems regular spring cleanings not only frees up space, but also optimizes file organization, disk defragmentation and system scans.

Manually going through all our files with a fine toothcomb would be an absolute waste of time. Let’s find a smart software to do the job for us. Let’s get chummy with Auslogics Duplicate File Finder.

How does Auslogics Duplicate File Finder work?

The ‘identical’ file finder software relies on several reference points like the elementary matching by name, size and date. Apart from these (and more importantly), it also relies on matching by content. Matching by content of the file types is achieved using the MD5 algorithm.  This algorithm is like a precise rule which can be used to find identical files by comparing their checksums. MD5 checksum is like a digital fingerprint of a file, unique and identifiable. Checksum match means that the files are identical.

Taking Auslogics Duplicate File Finder out for a hunt.

The freeware has a very simple intuitive interface. The process begins by selecting the drives and folders one wants to include in the search. The program also can scan all removable media like USB drives for duplicate content.



After specifying the where, in the next screen we have to specify the how. Three simple criteria cover all the options. With Matching Criteria, you can set it to search by file name, date and time of creation, file size and finally, match by content. Match by content is the most accurate as the first three can give differing results, but matching files by content improves accuracy. The only offshoot is that a search for checksum matches is considerably slower.  The Advanced Criteria allows you to keep out files under a specific size. File Type further lets you narrow down the search to specific files.


Scan times depend on the search criteria selected. But my subjective opinion says that it’s quite fast. The results indicate the duplicate files and the potential space you can recover if you delete the duplicates. The duplicates are clustered together in groups and are marked out in alternating bands of color. File actions can be performed using a right click or from the Action menu. Actions like Select One in Each Group, Open With (the default file handler), and Explore Folder lets you better manage the clean-up. With a Delete, the duplicate files are moved to the Recycle Bin.



Note: Before deletion, use Action – Open to visually check the files as a precautionary step.

Rounding it all up

To list the pros – The 1.69MB download is free, uncomplicated and light on system resources (memory footprint isn’t more than a typical browser). Scanning is fast even with Match Content enabled.

To list the cons – The program could have done with more selections for file filters. The final action is limited to deletion; a move option from within the interface would have been a plus. The vanilla interface might put off users who are more hands on with their optimization tools.


As a typical no-cost, no-loss program, the Duplicate File Finder is worth a try. Auslogics Duplicate File Finder (ver. runs on Windows (XP/2003/Vista/2008/7).

Which is your software of choice? Let us know how you purge the copies.

Image credit: where are the joneses

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  1. dupes
    September 28, 2009 at 10:26 am

    Looks quite nice!

    What’s the system resource usage like when scanning for dupes? I’ve been using Duplicate Finder 2009 for this purpose.

  2. Alex
    September 6, 2009 at 4:11 pm

    but deleting all files, does not happen automatically
    doublekiller, I think that allows automatic cancellation

    • Alex
      September 7, 2009 at 3:31 am

      I tried to do after a scan with DoubleKiller and I found other duplicate files.not perfect Duplicate File finder(you can do the test)

      • Johan
        September 7, 2009 at 7:33 am

        Which version of DoubleKiller? Free or Pro?

        I've used DiskState before, have not had time to compare it to the tools mentioned in this article/comments.


        • Alex
          September 7, 2009 at 8:18 am
        • Alex
          September 7, 2009 at 8:24 am

          I explain my test: with Duplicate file finder, I did more scans at intervals not to reveal more duplicate files.
          I have taken the test by name.
          Then I made a single scan with DoubleKiller always by name, and revealed many duplicate files

        • Saikat
          September 8, 2009 at 12:49 am

          Hi Alex,
          Tried out a comparison over the next few days. Won't dispute your results.My test scan on a folder of about 100 pics was quite good. Even though I didn't scan by name. The software seems to be quite good. In fact there are quite a few of them in this category. I liked this one because it doesn't need an installation. Thanks for the info. Might do a detailed review on it.

  3. Jonathan Wylie
    September 6, 2009 at 3:33 pm

    Really useful. Thanks. Cleaned up well.

  4. ezza
    September 6, 2009 at 3:27 pm

    yeah, i think its called, windows :P

  5. Fiffe
    September 6, 2009 at 3:08 pm

    Any suggestions on a program like Auslogics for Mac OS?