What are the checkboxes in the image list used for?
The list in the left-hand side of the window will show you all the images in your input folder which will be processed. Click on an image file from the list to see a preview and a few details about the file. You can exclude images from the batch by unchecking their names in the list. This is useful if you have a few specific images in your folder that you don’t want to be modified. You can also access several useful features by right-clicking (or control-clicking) the list: reveal an image in the Finder, open the image in your default graphics program, view metadata, or check/uncheck many images at once.
