2. The method of claim 1 , wherein the characteristics analyzed in step (a) include a PDF version of the document and presence of specified types of data in the PDF document.
3. The method of claim 2 , wherein the first interpreter is Adobe PDF Print Engine (APPE) and the second interpreter is a Postscript interpreter, and wherein step (b) includes: if the version of the PDF document is one of a pre-defined plurality of PDF versions, or the PDF document contains transparency data, selecting only the APPE interpreter to be used to interpret the PDF document.