[Windows] Find duplicate images on your computer (even if they are different formats) with Image Deduplicator

Do you have multiples of the same picture saved on your computer, or at least want to find out if you do? Well there is a program for that! Image Deduplicator can help you find duplicated images on your computer, even if they are saved in a different format.


Main Functionality

Image Deduplicator is a program that is able to help you find duplicated images on your computer. The great thing about the program is its ability to locate similar images even if they are saved under a different format. So if you have the same image saved on your computer as a .JPG and a .BMP, this program can point that out for you.


  • Helps you located duplicated images on your computer, even if they are saved in a different format
  • Supports more than 30 image formats. This includes (but is not limited to): JPG, BMP, PNG, GIF, TIF, ICO, CUR, WMF, TGA
  • Super fast search engine – most searches will take just seconds
  • Duplicated pictures can even be found if they have a different resolution or color
  • Extremely easy to use. Was able to figure out the whole program without reading any of the help files
  • Uses very little RAM
  • No installation required


  • Program warns that some searches could take hours. I didn’t run into this problem, but I guess it depends on how many pictures you have.
  • Only offers three languages
  • If you don’t deal with a bunch of pictures, this program will be of little use to you


Image Deduplicator is an extremely user-friendly program that can help you locate duplicated images on your computer. The great things about this program are how fast it can search for these images and the fact that it can locate duplicated pictures even if they are in different resolutions, formats or colors.

The program itself is very easy to use. I was able to use it without any problem. All you have to do is specify what directory you want to be searched, and afterward you will see a list of any duplicated images found. This is nice because you don’t even need to know what image you think may be duplicated. This program will find it for you.

Image Deduplicator reads just about any file format that I came across. It says that it is able to read more than 30 different file types. This may be true. The only thing that I can say for sure is it did not come across a file type on my computer that it was not able to recognize.

If you have a computer that has limited resources, then you will be happy to hear that Image Deduplicator uses very little RAM to run. I was able to continue doing what I wanted during searches. That being said, the longest search that I came across was 30 seconds. So, it was not like I had to wait around for long. Image Deduplicator warns the user that some searches could take hours, but this is based on how many pictures you have on your computer. I can’t imagine a search taking that long, but I guess it is possible.


Overall, I loved using Image Deduplicator. I was only able to find two duplicated images on my computer, but that was enough to prove to me that it does indeed work. For someone who downloads or saves more pictures than I do, this program may be able to save you a lot of time and space on your computer.

Price: Free

Version reviewed: 1.5

Supported OS: Windows 98 / Me / 2000 / XP / 2003 / Vista / 7

Download size: 894KB

VirusTotal malware scan results: 0/43

Is it portable? Yes

Image Deduplicator download page

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  • markbun

    I use “DuplicateFilesDeleter” a guaranteed fix for finding and removing duplicate files.

  • Frank D

    @Janusz: Thank you, Janusz! It’s working now. That was not so intuitive. It’s strange why the “setup.exe” file didn’t work.

    It’s unfortunate that the photo windows are so small and non-resizable. I can’t judge image quality based on such small images.

  • Janusz

    I hope this will help:
    1. download Image Deduplicator 1.5.zip
    2. double left click on the downloaded file
    3. double left click on imddup.exe
    4. Extract All ? Next ? Next ? Show Extracted Files ? Finish
    5. double left click on imddup.exe ? Run [Done]

    To create icon on the desktop: right click on imddup.exe ? Send to ? Desktop [Done]


  • Janusz
  • Mr.Dave

    Image Deduplicator is also available on Softpedia.com, download is same size:

    Developer: Tomasz Kapusta
    Size / OS: 894 KB / Windows All
    Last Updated: December 11th, 2009, 18:49 UTC

    Another option, also from 2009 and on Softpedia, is VisiPics 1.30. I searched 3 different folders, almost 2,700 pics, during a malware scan, and it took 10 minutes.

    VisiPics (VP) has the added advantage of letting you compare across several folders at the same time, while Image Deduplicator (ID) can only search a single folder and its subfolders.

    VP has a built-in image previewer with zoom, while ID can open files in separate windows using Vista’s image preview program.

    Interfaces for these two programs are very different, both do the job. I like VP even though it’s harder to learn and ID has a better looking interface, because I can include many folders in a scan. Both run fine on 32-bit Vista Home Premium!

  • Peter

    At least the german “translation” is a desaster

  • Frank D

    The program does not install. Tried three times, same result. It first wants to install something called “Free Commander” and when given permission doesn’t do anything.

  • Cindy

    I was looking for a free image dup finder (had to settle for Auslogics Duplicate File Finder, it was the best of the bunch I looked at. I will have to try this. I am really looking for a dup image finder the finds dups of images that are in thumbnail size and full size of the same image. Something that would find all 100×100 pixels images of the same photo that is also 800×600.
    Wonder if this can do that? Love that fact that it is portable!

    PS… I thought THIS program looked of an old GUI, but that DupDetector from the above link looks like the Windows 95 days! EEEK! Why don’t companies improve the GUI on their software to atleast make them look like Vista? It’s Windows 8 now for Heavens sake.

    PSS….went to the download link of DeDuplicator and only mentions Windows XP, doesn’t mention Vista or Windows 7 …. maybe I better NOT download.

  • Jim-1

    Another program for cleaning image collections of unwanted duplicates is Dup Detector (http://prismaticsoftware.com/dupdetector/dupdetector.html) Dup Detector will not only find the same images in different sizes, but it can also find similar images based on a user selectable sensitivity setting.

  • dadams

    This works pretty well. You may also try anti twin. It’s an older program but it’s portable. Just click the icon and let it go to work. Check it here