Removing White Borders from PDF document

[diguimfodera]

I want remove the white borders from PDF document, and set the page marks (bleed, trim..) to page without white borders.
I tried use the action "crop images", but didnt work, becouse it just crop th images, not document's pages. May someone help me?

[melaniec]

Maybe a "Select all" followed by a "Change crop box" which resizes the crop box to the selection could remove the white borders of your PDF?