Have you ever tried to manually check a digital image collection for duplicates? When I look at the images stored on my computer, I'd imagine that it would take ages to go through it manually to find duplicates, and even if I would manage to do so, I'd end up finding only some dupes due to its size.
The best option in my opinion is to use programs that automate, or at least semi-automate the process for you so that you just have to go through the results a program presents to you instead of doing all the hard lifting manually.
I have mentioned Similar Images before here on the site, in an article that explained how you can find duplicate files on your computer system. Since images are nothing more than files, I decided to give it a try to see how well it would cope combing through my image collection.
Similar Images scanned my collection of 75000 files in three hours and displayed all images it identified as dupes next to each other.The program displays both images next to each other as thumbnails, and also important information such as file size or resolution. You have options to delete one of the images or skip this set and move on to the next.
It is also possible to delete similar images automatically by defining rules in the options first. You can change a number of settings in the options. If you only want to compare files in the same folder or only in different folders for instance. It is also possible to lower the execution priority to lower the load and make the system more responsive.
Great tool, found lots of duplicates and I was reluctant to use the automatic routine to delete duplicates.
Update: The duplicate image finder is no longer available. As far as alternatives go, I suggest you check out the Anti Duplicate program which gets still updated regularly. The program works by selecting files or folders that you want to check for duplicates.
What I like about the program most is that it displays previews of images right in its interface so that you can compare the images side by side before you delete one of them or skip the pair.
Other important parameters, like resolution and size, are also displayed here so that it is relatively easy to go through a collection of pictures on a system to find and delete all the duplicates from it.
Options in detail
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.