This plugin resizes uploaded images to a given width.
Q. Why not reduce images in height? A. The reason I wrote the plugin was to stop breaking the layout with images that are to large. Height is not always an issue. Maybe in future this option will be added.
Q. Does it keep my EXIF data? A. No. Although it is programmatically possible to extract that data first and put it somewhere in the metadata, which is not implemented off course, but a possibility, the data is lost in the process of resizing.