Can images embedded in a Rich Text field be resized on output? I see how to use Image Transforms when the image tag is its own field but don't see a way to handle images within Rich Text fields or force a size on upload. 

I need to have the image dimensions match the size the client sized the image to in the Rich Text field. Is there a way to do this?
If you create an image transform in the control panel, the client will be able to choose that transform when selecting an image (in the bottom right corner). But there's no way to get Craft to transform the image based on the size the clients manually set the image to be in the rich text field.