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Files - Duplicate Checkers (12)

ImgSearch v3.0.8

webfork on 16 Mar 2019

ImgSearch lets you search and delete similar images across multiple folders. The program even allows checking for similarity from previous image analysis. Files are removed to the Recycle Bin and can be restored in case of a mistake.

Supports analysis of JPG, GIF, BMP, ICO, CUR, WMF, EMF, PNG, PCX image formats.

System Requirements: Win98 / WinME / WinNT / Win2K / WinXP / Vista / Win7 / Win8 / Win10
Writes settings to: None
Stealth: ? Yes
Unicode support: No
License: Freeware
How to extract: Download the ZIP package and extract to a folder of your choice. Launch ImgSearch.exe.
Similar/alternative apps: AntiDupl.NET
Latest comments
__philippe on 2016-03-01 16:35

Worthy alternative to ImgSearch (which has not been updated since March 2007) :

Antidupl.Net 2.3.8 (Released Sep 2015)

spicydog on 2018-01-24 02:19

Download link (and apparently website) seem to be broken.

Download from Softpedia:

webfork on 2018-01-24 20:37

@spicydog: thanks for that -- billon pointed it to (thanks billon)

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Simple Duplicate Finder v1.2.0.3

webfork on 13 Jan 2019
  • 117KB (uncompressed)
  • Released on 1 Dec 2011
  • Suggested by ancientimages

Simple Duplicate Finder helps track down similar files either to delete extras and save space or to compare versions. While most duplicate-searching programs are looking for exact copies, SDF uses a Percentage Search, allowing you to adjust the percentage difference required for a file to be considered a duplicate. Once scanned, the program will display the number of bytes which differ as well as the specific percentage match between files.

This is useful for example with metadata: when Windows Image Import tool downloads pictures from your digital camera, additional XML data is inserted into the images and video files, including a timestamp of when the image was downloaded to the computer. Although the image is identical in every way to its original, the file will appear as unique. SDF can detect these files and help remove them.

Note: main site appears to be down, switched to

System Requirements: WinXP / Vista / Win7 / Win8
Writes settings to: None
Stealth: ? Yes
License: Freeware
How to extract: Download the ZIP package and extract to a folder of your choice. Launch DupFinder.exe.
What's new? ----Version
Initial Release

Added percentage match ability, this superceeds smart jpeg search feature.
Added Extension filter to search only for specific file types.
Bugfix, empty directory search could cause previous version to hang.
Updated program icon to be compatable with olders versions of windows.

Code optimization for increased speed.
Added ability to compare files which sizes are not identical, but within percentage match.
Total progress now still displayed during a large file compare.

Fixed a sort problem where text could be incorrect for an item

Increased sort speed

Renamed program to "Simple Duplicate Finder" since someone stole my other program name
Latest comments
Allen on 2015-01-18 21:56

Links are all dead

I am Baas on 2015-01-18 23:14

Thanks... linked to

__philippe on 2019-01-13 08:29

Simple Duplicate Finder v1.2.0.3 - link date 20-FEB-2012
Just re-discovered this antediluvian gem of a dups finder...;-)

What's not to like ?

• Terse, elegant, skillfully crafted GUI
• Option for similitude percentage match
• Filter for file extension
• Duplicate entries results neatly listed as offset to the stem file
• Stunningly fast execution (files CRC used as match criteria)
• Tiny footprint (117KB exe)
   Leanest of TPFC's "Duplicate Checkers" current 11 entries

Oldie, but goodie...Recommended.

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Awesome Duplicate Photo Finder v1.1

Checker on 2 Dec 2015
  • 2MB (uncompressed)
  • Released on 18 Oct 2012
  • Suggested by boloyoung

Awesome Duplicate Photo Finder is a powerful tool that helps you to find and remove duplicate photos or similar pictures on your PC. It is able to compare pictures that were resized or with corrected colors (e.g. contrast modified, black and white photos, etc.)

System Requirements: Win2K / WinXP / Vista / Win7
Writes settings to: None
Stealth: ? Yes
Unicode support: Yes. Supports unicode filenames.
License: Freeware
How to extract: Download the ZIP package and extract to a folder of your choice. Launch AwesomePhotoFinder.exe.
Similar/alternative apps: Dup Detector
What's new?
  • Support for TIFF images.
  • Option to search only identical pictures (excluding just similar).
  • Option to exclude scanning of subdirectories.
  • Option to check for program updates automatically.
  • Option to turn off the annoying confirmation of deleting files.
  • Saving settings.
Latest comments
kiwichick on 2010-06-17 08:22

Would be nice if it had an option to not search subfolders.

Hinesmdc on 2015-06-05 02:51

@kiwichick It does!

webfork on 2015-11-29 20:56

Absolutely excellent program that saved a ton of room on my hard drive, clearing out duplicates as well as several multiple-size images from an earlier effort to compress some really big photos. The best part is how it automatically sees two photos that are already very similar and helps you pick the better one to archive. There were only one or two false-positives in a batch of hundreds (a concert picture somehow got paired with a painting of Mozart).

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Bytessence DuplicateFinder v1.3.0

webfork on 15 Jun 2015
  • 1MB (uncompressed)
  • Released on 7 Oct 2011
  • Suggested by Wolfghost

Bytessence DuplicateFinder (BDF) detects all the cloned files that you might have on your computer. These files, in addition to taking up valuable space, can increase antivirus scan time, slow defragmentation and searches, and make it more difficult to organize your files.

The program employs optimized detection system and file filters to reduce scanning time. Detected files can be removed in no time with the help of the automatic file selector and the predefined set of actions (copying, moving or recycling).

Note: Website is offline, switched to

System Requirements: WinXP / Vista / Win7 / Win8
Writes settings to: Application folder
Stealth: ? Yes
Unicode support: Yes
License: Freeware
How to extract: Download the Portable ZIP package and extract to a folder of your choice. Launch BDF.exe.
Similar/alternative apps: DoubleKiller
Latest comments
bytessence on 2011-10-08 09:43

Hello! I am the developer behind BDF. I just released a new version of the program (1.3) which fixes some annoying bugs.

If you can reproduce the crash, please enable logging from the Settings dialog. The error handler should catch the exception and will write it in the log. You can send the log to the support e-mail and I'll try to fix the problem. Thanks and don't hesitate to contact me if you find bugs.

webfork on 2013-02-03 21:32

Might be my new favorite duplicate finding program on the site next to DoubleKiller (and certainly much easier to use).

webfork on 2013-05-10 01:51

Getting intermittent errors with the website. Softpedia link:

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CloneSpy v3.42

billon on 13 Oct 2018
  • 6MB (uncompressed)
  • Released on 13 Oct 2018
  • Suggested by Fluffy

CloneSpy can help you free up hard drive space by detecting and removing duplicate files with exactly the same contents regardless of their name, date, time, or location. Also, CloneSpy is able to find files that are not exactly identical, but have the same file name. This can be an issue for example if you have different versions of a file and you want to find and remove the older versions. CloneSpy is able to find zero-byte files.

Note: The installer now allows you to choose between a 32 or 64-bit version of CloneSpy.

System Requirements: WinXP / Vista / Win7 / Win8 / Win10
Writes settings to: Application Folder
Stealth: ? Yes
Unicode support: Yes
License: Freeware
How to extract: Download the installer and select 'portable version' at installation type. Launch CloneSpy.exe.
Similar/alternative apps: DoubleKiller
What's new?
  • Added:
    • Folders can now be scanned non-recursively, i.e., sub-folders can be ignored (see Pool frames of the Main window);
    • When moving files to a relative path, the path can now be resolved relative to a retained file (see Deletion page of the Options window);
    • Files with paths that are too long for CloneSpy to process can now be generally ignored (see Files page of the Options window).
  • Modified: The installer no longer requires administrator privileges for unpacking the portable version.
  • Fixed: Added an explanation for the formerly unknown error code 1392.
Latest comments
MarkyMark on 2015-04-09 15:36

A lot of people here trying to delete multiples of the same image - I just wanted to give a shout out to Dup Detector, which is a great piece of software that does exactly that.

Dup Detector doesn't just do file-size/checksum analysis, it actually analyzes the images to find similarities. E.g. one could be black & white and the other can be color, or one can be watermarked, or one could be taken 2 seconds later because someone blinked & it'll find both and display them to you and ask which one you want to delete or if you want to keep both. You can choose how strict it is in its matching algorithm - 100% mach, 95% match etc.

You can even have it set up to automatically select which one to delete based on rules - e.g. the smaller one. Then you just approve the selection by hitting the space bar, or you can just let it do its thing automatically, or you can go full-manual mode and click the image you want to delete. Super fast way to delete duplicates and easy to use. I've used it professionally to manage large image catalogs that had a lot of duplicates of different sizes.

Unfortunately, it's not portable.

The latest version I have is 3.3.02 from July 8, 2011. You can get an earlier version from rareware.

I am Baas on 2015-04-09 16:44

@MarkyMark Dup Detector is in the database at

MarkyMark on 2015-04-10 02:08

Oh awesome. Well, it's still great software - it does one thing & does it very well.

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