I'm trying to create a kind of page break function for pdfs using pikepdf.

Given some vertical position (dotted grey line in the image) I want to split the page into two pages. I want to keep the page size and move the elements under the line to the top of the next page.

I basically need to do 3 things:

• List elements on page
• Find the position of given elements
• Move elements around the page

I'm struggling to find the relevant documentation on the pikepdf docs page. Could someone point me in the right direction?

CodePudding user response：

You should be able to do this in cpdf (or its Python library version pycpdflib). From the command line, you might do (untested):

cpdf in.pdf 1-3,3,4-end -o out.pdf

(duplicate page three as new page 4)

cpdf -trimbox "x y w h" out.pdf 3 AND -trimbox "x2 y2 w2 h2" -range 4 -o out2.pdf

(crop the duplicate pages for suitable x y w h values)

cpdf -hard-box /TrimBox out2.pdf 3,4 -o out3.pdf

(actually trim the page content to the new trim boxes, baking it in)

cpdf -remove-trim out3.pdf 3,4 -o out4.pdf

(remove the trim box, restoring the original page dimensions but leaving the hard box in place)

cpdf -shift "dx dy" out4.pdf 4 -o out5.pdf

(shift the lower part up to the top of the page for some dx dy)