How large can a PDF document be, in inches?
Estimated Reading Time: 1 MinutesA PDF document may have a maximum size of 14,400 by 14,400 units in default user space, and a minimum of 3 x 3 units. At a default unit size of a point, or 1/72 of an inch, a PDF document may not be larger than 200 inches by 200 inches. See Annex C, “Implementation Limits,” in the ISO 32000 Reference, 1.7.
You can specify the size of the unit in default user space on a page-by-page basis. Using the PDF Library, this can be controlled via the UserUnit declaration.
For example:
ASFixedRect mediaBox = {0, Int16ToFixed(150*72), Int16ToFixed(150*72), 0};
[...]
PDPageSetUserUnitSize (pdPage, 2.0);
With the PDPageSetUserUnitSize() usage in the above example, the MediaBox will display as 300 x 300 inches in Acrobat. Without the PDPageSetUserUnitSize(), the above code will produce a MediaBox that will be shown as 150 x 150 inches. For .NET and Java applications, use the UserUnit property of the Page class.