There are still some troubles when converting a svg to pdf at least, but maybe to jpg too, if a image has on top of it a rectangle or any other geometrical figure, with a transparency level of lower than 1, and if that figure is not completely covering the image... The image in resulting PDF will be placed on top :( of the figure and the figure will look broken...
I could not reproduce the problem. This is the document I tested with, using the latest SVN copy of Batik and whatever version of FOP's pdf-transcoder.jar is in Batik's repository (0.9alpha1): <svg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='400' height='300'> <image xlink:href='something.jpg' x='50' y='50' width='300' height='200' preserveAspectRatio='none'/> <circle cx='50' cy='50' r='30' fill='red' opacity='0.5'/> </svg> Do you still encounter the problem?