ImgSearch

ImgSearch is a compact and portable application that points out duplicate images on the computer and removes them, in order to save up space on the hard drive. No special knowledge is required to use this program.
Since installation is not a concern, you can just extract the archive contents to any spot on the hard drive and run the executable file directly.
Otherwise, you can store ImgSearch on a USB flash drive or similar storage unit, and run it on any computer. This way, you can keep the app in your pocket whenever you're on the move.
What's more important is that the Windows Registry section does not receive entry updates, and files are not left behind on the hard drive after removing the app.
The utility is wrapped in a standard interface with an intuitive layout. Thanks to the Explorer-based folder structure, you can easily select a directory to submit for analysis.
Images can be moved or copied to a different location in just a few clicks. Plus, you can resize them, sort items by size or file path, animate the GIFs, create an exclusion list, as well as compare two pictures when it comes to the symmetry. Other options focus on the picture quality, maximum cached comparisons, thumbnails and bitmaps, among others.
ImgSearch is very low-demanding when it comes to the system memory and CPU, has a good response time and completes a scanning operation swiftly, without making Windows hang, crash or pop up error dialogs. On the downside, the tool has not been updated for a very long time. Other than that, ImgSearch provides a simple deletion method for all users, concerning image duplicates.