ReNameIt

ReNameIt is an advanced software utility designed to change the name of many files at the same time using macros. It supports filters and enables you to preview the new names to make any necessary adjustments before proceeding with the task.

Preview the old and new file names

The interface of ReNameIt is simple. It has a clean appearance and tidy layout, showing the list which can be populated with files, along with large buttons and a menu bar. Files can be added one by one or by selecting their folder using the drag-and-drop mechanism.

The file list shows the old and new name of each record, in addition to the location on the HDD. The prototype dropdown menu is the one responsible for the renaming conditions and can be filled with a wide range of macros explained in the help documentation.

Create renaming prototypes using predefined macros

Unfortunately, there is no menu available in the graphical interface that shows these macros, which would've made them easy to assign by just analyzing their descriptions to decide what to pick.
For example, you can insert indexes ${i} and format the index value in base 10 (dec), base 8 (oct) or base 16 (hex) as well as point out or omit the numeric base (+b or -b). It's also possible to convert text to lowercase or uppercase (low or up), and set an integer number to start counting from.

Add time attributes, replace text, and filter files by type

ReNameIt is also capable of extracting date and time attributes to apply to the new file names, as well as to replace keywords with other strings of characters. As previously mentioned, filters are supported and can be used to exclude files by extensions.
Another significant aspect is that the original files are processed so you should make sure to get the new names right because there's no possibility to undo actions.

Doesn't require setup

The lightweight application is packed into just one file. The .exe can be copied to a preferred directory on the disk or to a removable storage unit to launch it on any computer effortlessly, without any prior installation. No new entries are integrated into the system registry, and no files are created on the hard drive without letting you know about it.

Macros take time to master

All in all, ReNameIt makes file renaming look simple, thanks to its intuitive interface. However, the macros take time to master because they involve frequent visits to the help file, which is too bad since the issue could've been resolved easily by creating a menu with patterns and descriptions in the graphical interface.