Gantt to Pdf: formatting and margins

Gantt to Pdf: formatting and margins

It seems thare are no ways to format a Gantt exported in pdf:
  1. No options for margins (so it's impossible to print it)
  2. No options for page dimensions (we can need an A4 or A3, not the "Letter" size)
  3. No options for title bar, neither for a header or footer line (hard to show it to a Customer)
Are there ways to bypass such heavvy constraints?

Thanks to all!

Sergio - Italy