Today many people have photo-cameras up to 20 mega-pixels. And the create documents up to gigabyte by inserting there photos.
Please, add tool to automatically reduce all images in document to selected resolution. I suppose 600 and 300 dpi for output on printer and 150, 100 and 75 dpi for screen. And option to delete cropped parts of images.
I suppose to Tools->Minimize document like in Impress.
*** This bug has been marked as a duplicate of bug 34133 ***