Make crop() work with all PDFs

[cboulanger]

@tcr : I have trouble understanding how crop() is supposed to work. I have updated the method documentation as per this stackoverflow answer but running tests I have trouble getting a meaningful result. For example,

 scissors(infile)
        .pages(1,2)
        .crop(0,0,40,70)
        .pdfStream()
        .pipe(fs.createWriteStream(outfile)

just produces pages 1 and 2 of the infile uncropped, although it should return a 40X70 box from the lower left (112x196 mm).

Did this ever work for you?

[tcr]

I believe it worked on some PDFs, but not every one. It requires that there be a /Cropbox value in the PDF which isn't a guarantee. See the second part of this stack overflow answer for a possibly more universal implementation.

[cboulanger]

Ok, thanks, that's good to know. Won't be able to work on this now, but hopefully later.

[cboulanger]

See also: https://stackoverflow.com/questions/5307825/how-to-crop-pdf-margins-using-pdftk-and-mediabox, and a last resort: https://askubuntu.com/questions/124692/command-line-tool-to-crop-pdf-files/592206#592206