I have taken 80 screen shots from google earth as part of a limtless zoom i want to do for a university project. because they are screen grabs i need to crop them so not to see the mac background icons etc. i have since found out that light room doesn't accept pngs. is there a way i can crop the image and then copy and pate the settings to the others? or is there any easy way all together? can i batch convert them to another file format and then stick them into lightroom?