What are the differences between PDPageGetMediaBox and PDPageGetSize?

The PDPageGetSize() interface was created first to return the PDF page size, returning it as a simple width and height.

The following interfaces were added later to provide more precise definitions of the PDF page:

• PDPageGetMediaBox()
• PDPageGetCropBox()
• PDPageGetBox()

PDPageGetMediaBox() returns an ASFixedRect such that the right-left=width and top-bottom=height .