WinFR, the former TW-Renamer, is an efficient utility for simultaneous renaming of several files in one step. Before the renaming modifications are displayed in a preview. To rename files a lot of options like name structures, numbering, replacing/removing, renaming by date/time, capitalization and much more are available. Beside the renaming options WinFR also offers further functionalities like the changing of file attributes, deleting of files, creation of file lists, detailed information about MP3 and JPG files, changing of ID3 tags, and much more. WinFR is particularly helpful with the comfortable administration of picture or music collections.