Automator - Load files into specific application

Does JPEGmini come with any Automator actions, or is it offer a command-line interface? Automator is based on flow of selected output from one action to another. Once you resize those photos, their full path will pass onto the next action.

If JPEGmini has no Automator actions, but does offer a command-line interface, then you can use a Run Shell Script action, and in the default Bash boilerplate for loop, you can process each file with JPEGmini settings. You will need the Run Shell Script action pass input: as arguments to process each passed file to it.

You can probably do it with AppleScript inside Automator by using the Run AppleScript action.

The way to do it depends on whether the application has extensive support for AppleScript or not. Many of the tasks can still be achieved by scripting System Events even if there is no direct support in the application.