Download Image Renaming, to append date and time to your photos
Image Renaming is a Free program that will let you rename your photos with a name based on date and time.
First you need to select a number of jpeg files that you want to rename. You can drag and drop into the program, or select them from the menu – File > Add File, or File > Add Directory, if you want to do a recursive search in all the subfolders.
After you select your files you can do any of the following operations: Add date into Image * Add custom text into Image * Add date to file name * Add index to file name * Append date to file name * Append index to file name * Random rename file