Split PDF pages in Ruby

To split a PDF document into multiple pages.

doc = PDFDoc.new(filename)
page_num = doc.GetPageCount()
for i in 1..page_num do
  new_doc = PDFDoc.new
  new_doc.InsertPages(0, doc, i, i, PDFDoc::E_none)
  new_doc.Save(output_filename + "_split_page_" + i.to_s + ".pdf", SDFDoc::E_linearized)
  new_doc.Close
end

Merge, Copy, Delete, and Rearrange PDF Pages
Full code sample which illustrates how to copy pages from one document to another, how to delete, and rearrange pages and how to use ImportPages().