These are the command line arguments that control the actions of pnp.exe, that you can send to it: -fld [folder] Renames all images in a specific folder. Specify the folder with images you want to rename, or type start to search for images in the same folder that pnp.exe is started from. Starting pnp.exe like this (from the command prompt): pnp.exe -fld start …has the same effect as double clicking it and type: Rename Folder Start Also, starting pnp.exe like this: pnp.exe -fld “C:\Temp” …has the same effect as double clicking it and type: Rename Folder “C:\Temp” -fle [filename]   Gives the specified file a new name. The file must be a jpg file that isn’t already renamed according to[…]

The portable version of Photoname (pnp.exe) doesn’t have a GUI, but it is pretty simple to use anyway. You can either start it from the command interface and pass arguments to it to tell it what to do, or you can double click on it, and then tell it what to do. If you want to control pnp.exe from another application, you must know what arguments you can pass to it. So, pnp.exe is a portable, lightweight GUI-less version of Photoname. Some of the commands that you can run if you start it without arguments, that is, just by double clicking it: Load {Filename} loads an image into memory. If the path or filename contains a space, you need quotation[…]