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.
For instance, the software can mark out two identical image files but with different resolutions as duplicates, or the same picture but in different formats and even duplicates where only subtle compositional changes have taken place. Similarity checks can be set using a slider.
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.
Supported image formats include JPEG, GIF, PNG, BMP, PCX, TIFF, TGA and RAW
Supported OS: Windows
So if you are a photo buff, which software would be a must-install for you? Do you know of any other free tool which makes hunting down duplicate files free and easy? Let us know…