[Inkscape-user] Imprting book cover.

I want to display a book cover. It is currently in pdf form but I can save it in any of a number of other formats. When I saved it in svg (from Scribus) the file was huge and the image was distorted. so that is out. That leaves PDF or a variety of bitmap choices. I am thinking of png or tiff. I want fidelity and reasonable size in the final svg file.

Any recommendations?