Doc CropBox Property. The current document visible page size. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page CropBox Property Type Default Read Only Description [C#] XRect [Visual Basic] XRect Letter Size [0, 0, 612, 792]. Yes The current document visible page size. Notes The current document visible page size. This property reflects the CropBox of the current page. For methods you can use to change the CropBox of the current page see the MediaBox property. Example None. previous page start next page