DnD Renamer allows you to rename any file you want by patterns. You can drag and drop files to the main window of the program and even to its shortcut.
How it works:
At the main window you have the default action that executed when files are dropped into the program.
%n - Replaced with the original file name
%d - Replaced with the serial number if more then one file is dropped
[dd] - The current day, likewise: [mm], [yyyy], [hh], [ii], [ss] for month, year, hours, minutes, seconds respectively
filter: - This action will apply filters on the file name (case sensitive action)
When the extensions option is checked the default action is overrided by the extensions table.
All the above rules applies in that table and preformed on the target file type.