Draw Images
drawImage places JPG, PNG, TIFF, or a page from a PDF at the supplied
bottom-left coordinates.
Pass an index for a page in a multi-page TIFF or PDF. The optional
transformation is either a six-value PDF matrix or an object with width,
height, and optional proportional and fit values for fitting an image in a
box.
pdfWriter.getImageDimensions(path) returns an object with width and
height. Reusable JPG, PNG, and TIFF forms are covered in
Form XObjects.