Difference Viewer - Add format checkbox

When using the Difference Viewer tool, I would like the option to check a box that would auto format both files before the difference compare takes place. This would give a better comparison since the same db object could be save in two databases using different formatting options which leads to false differences. I can accomplish the same thing by opening the both objects, formatting it, then saving the ddl to a flat file and then using the Difference Viewer... but this takes a lot more time.