> Does anyone know if its possible to batch resize based on the smallest dimension? so every thumbnail I create would be of a minimum smallest dimension?
I'm not really sure what you mean - could you give me a few sample dimensions of input images, and what their output dimensions should become? Or, describe some more what you're trying to accomplish?
A common task is making thumbnails that will fit within a certain square boundary regardless of whether they're landscape or portrait oriented. If that's what you mean, resize them to a square size, e.g. 120x120 pixels, with options 'Aspect fit: Both' and 'Autocrop after resizing'. With that, you can batch-resize all images (regardless of orientation) in one go.