Batch File Renamer from Ezyware is, as its name suggests, a batch file renamer, a utility that can quickly and easily change the name, order, and attributes of files and folders, either singly or in large batches; in this case, up to a million files at once. It can sort file names by name, date, and time, and it previews all changes before making them. It's very small, totally portable, and free, too.
We noted that Batch File Renamer is portable, requiring no formal installation: just click the program file, and it runs. The user interface is a compact, efficient job with a single window displaying customizable fields: Dates, Source Filenames, Destination Filenames, Size, and so on. The scrolling tree view for browsing to the source destination is a bit awkward; a standard file-browsing dialog would be an improvement. We selected LowerCase in the Generate Destination File Names entry field and clicked Generate. Next we entered what we wanted to replace and what to replace it with, selected the File Attributes from a handy check box on the interface, and clicked Replace, which previewed the changes in the destination field. We clicked Start Renaming, and the program quickly did the deed, as we verified by opening the folder to see the changes for ourselves. Batch File Renamer offers a Command Line prompt with CMD and Execute buttons at the bottom of the interface; this option should appeal to system admins and the hard-core, old-school types out there.
If you've got a digital camera, song collection, or just a bunch of files you'd like to rename or reorder, but you dread going in and doing it all one file at a time, you need a tool like Batch File Rename.