I've already added an background image to my pdf using :
<fo:simple-page-master master-name="LetterLandscapePortada" page-height="21.59cm" page-width="28.94cm" >
<fo:region-body margin="0cm" background-repeat="no-repeat" background-image="url(file://D:/XSL/fondoPortada.jpg)" />
</fo:simple-page-master>
But I'm having problems in order to "auto-fit" the image to the page because the image is larger than the page size.
Does is posible add a property in order to fit the background image to the page?