Pick a corner, set a format like "Page %n of %t", and offset the start page if you want unnumbered cover pages.
Drop a PDF here
application/pdf, up to 25 MB
TL/TC/TR = top corners. BL/BC/BR = bottom corners. Most-used is BC.
Template. %n inserts the page number, %t inserts the total. Example: Page %n of %t.
%n
%t
Page %n of %t