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DupliFinder: Why You Need to Find Duplicate and Similar Images on Your PC



If you are a quick fingered photo-snapper or a wallpaper junkie then the thousand of images on your hard drive could be a treasure hoard. But scattered among them could also be a few hundred duplicate images eating up space on your hard drive. Even worse, un-optimized raw images could be eating up chunks of bytes and can be officially called junk.


Dup Detector requires that all images be in one folder. After that it starts with its job by comparing pixel data for each image. It records it all in a data file and finds duplicate images by comparing the closeness of the pixel data. The software starts off by displaying a four tabbed interface - Method, Get Data, Find Dups and View Dups.




DupliFinder: Find duplicate and similar images on your PC



The 'Method' tab gives you the option to find duplicates in a single photo collection, between two collections or just compare a single image to all images in a collection. 'Get Data' enables you to open an existing data file (i.e. a list of images) or build a new data file. The 'Find Dups' tab is where you can play around with the matching criteria like percentage match, colour and luminance. The 'View Dups' is the results tab displaying the matched images. You can setup the software to do a manual delete, a semi-automatic delete or an automatic delete.


DupliFinder scans and checks image similarities by analyzing the MD5 sum (i.e. the digital fingerprint) of each file. The interface is stark and it lets you browse to your image folder or drag and drop it directly into the program. It lets you check folders or sub-folders for images which are identical and also for photos which are similar. Thus, you might get find related as well as duplicate photos in the results window. The preview helps you to choose which ones to delete. The scan speed is a bit sluggish especially for large image folders but the comparison results are close to the mark.


I usually like to save the best for last and in my humble opinion it is this 1.9 MB software amongst the free bunch. VisiPics employs five image comparison filters to see how similar pairs of images on the hard drive are.


Detected duplicates are shown side by side as thumbnails and also in a larger preview window. The images can be flagged for deletion, they can be renamed and can also be moved to another location. The auto-select mode let you choose if you want to keep the higher resolution picture, uncompressed file types, smaller files or all of the above. The single window interface is easy on the eyes and the brain. It is also fast and as the software wiki says about the software - tested on 100.000 pictures, 15 GB archive, full results in 3 hours only.


Just because there are duplicates within iPhoto, doesn't mean that iPhoto actually has duplicated the file. Navigate to /Pictures/. Right-click on iPhoto Library, show package contents. Find your event within Originals//. Backup the directory. Remove the event from iPhoto - I don't know if this removes the actual folder or not, that's why I suggested backing it up first. Re-add it. Voila.


If you get too many pictures on your harddrive, downloaded or photographied, from several different sources, it may happen that you have many duplicates. In that case you need a quick and easy to use program that finds and deletes all your duplicates.


VisiPics does more than just look for identical files, it goes beyond checksums to look for similar pictures and does it all with a simple user interface. First, you select the root folder or folders to find and catalogue all of your pictures. It then applies five image comparison filters in order to measure how close pairs of images on the hard drive are.


Visipic is a program that is considerably faster than any other commercial product and has an interface that let you do other things while Visipics automatically finds your duplicated images. It will detect two different resolution files of the same picture as a duplicate, or the same picture saved in different formats, or duplicates where only minor cosmetic changes have taken place.


All detected duplicates are shown side by side with pertinent information such as file name, type and size being displayed. Its auto-select mode let you choose if you want to keep the higher resolution picture, space-saving filetype, smaller filesize or all of the above. If you are insecure over what you really want to delete you can manually select the images you don't want to keep and delete them yourself.


Duplicate File Finder is a free tool designed to find and delete duplicate files over home and corporate network while no software installed on other computer. Fast byte-to-byte comparison gives you the accurate results and it searches duplicate file contents regardless of filename. A list of duplicate files can be remove, moved, or copied.


From an app design perspective, the app is also safe to operate. After scanning a folder to find duplicate files, Cisdem Duplicate Finder removes the files to Trash upon your request. That means, if you realize you made a wrong action, you can always undo it by checking Mac Trash and pulling those files back. 2ff7e9595c


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