Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
ImageMagick crops to the PDF MediaBox. Your image has a TrimBox and an ArtBox. According to the spec you can have one or the other but not both. Either way we currently ignore these tags.