imgdupes is a command-line tool that finds duplicated images in a directory tree. The difference with other file-oriented utilities (like fdupes) is that imgdupes is specifically tailored to JPEG files, and compares only the image data chunk, ignoring any metadata present in the file (EXIF info, tags, titles, orientation tag...). This makes possible to find duplicated images when one of the file's metadata has been modified by imaging software, and byte-by-byte comparators fail to report them as equal. This might happen in a number of situations.