I would like to suggest the option to specify in preferences a max dimension/scale to be used for batch file conversions. For example, I may have a series of source images of different sizes. I would like to do something like either specify scale until the larger dimension (x or y) is no more than X (for example, 2048px) or scale no more than a 2x (or 3x or 4x, whatever specified) size.
That way when you are processing a batch you can upsize an image to a certain point but no bigger. So the upscaled result would be the lesser of the scale or dimension specified instead of trying to scale everything to a fixed scale or only working with a horizontal/vertical axis.
