How to edit or write on existing PDF with Ruby?

Question

I have a couple of PDF template files with complex content and several blank regions/areas in them. I need to be able to write text in those blank regions and save the resul

Answer 1

I recommend prawn for generating PDFs and then using combine_pdf to combine two generated PDFs together into one. I use it like this and it works just fine.

Short example (from the README) of how to combine two PDFs:

company_logo = CombinePDF.load("company_logo.pdf").pages[0]
pdf = CombinePDF.load "content_file.pdf"
pdf.pages.each { |page| page << company_logo } # notice the << operator is on a page and not a PDF object.
pdf.save "content_with_logo.pdf"