What is the MkIV/LuaTeX way to set the CropBox? In MkII/PDFTeX, I used \pdfpagesattr = {/CropBox [54 72 558 720]} With MkIV, I've tried \pdfcompresslevel 0 \pdfbackendsetpagesattribute{CropBox}{[54 72 558 720]} \starttext \input knuth \stoptext but that set the CropBox as a string, and didn't override the A4 setting: <> I also tried \pdfcompresslevel 0 \startluacode local box = lpdf.array{54, 72, 558, 720} lpdf.addtopagesattributes("CropBox",box) \stopluacode \starttext \input knuth \stoptext and that produced an improved line in the Pages object: <> but the actual cropbox for the page is unchanged (A4), probably because the page object itself (object #16) overrides the CropBox with this: /CropBox [ 0.0000 0.0000 595.2756 841.8898 ] (This is all with the 2014.02.14 beta.) Regards, -Sanjoy