CM Batch Filename Changer came about from years of getting a simple to use but yet comprehensive filename changer for the Mac. This app was born from the need to find a simple way to batch rename photos but evolved to support any kind of files on the Mac.It uses a two step method which lets you build the filename format using the built-in filename format editor which comes with quick macro to ensure that you can add dates and running numbers with padding to the filenames preview the changes and once you are happy with it do the actual change.Not only that it comes with the date format editors too. Actually two of them so you can set up different date formats using the Date Builders. You can use either the Creation Date Modification Date or EXIF Date.We understand that you might want to use your own custom filenames for each file and you can either manually update the New Filename properties on the list or use a CSV file from your app or your favorite Spreadsheet to generate the list. That is also covered.The app would power up its two renaming threads to speed up the process and you can get a list of renamed files within seconds or minutes.When you perform a filename change the modification and some times the creation dates would change depending on how you perform the change. CM Batch Filename Changer would retain the file original creation and modification date so you do not have to worry.