Place object to background

Question

I have existing multipage PDF. Are possible to place(move) object (Text, Picture) to background. For example I have PDF with text and would change background.

Answer

Normally it is not easily possible to move or delete existing objects in a PDF file due to the complexity of the PDF format. Overlaying objects such a text and images is straightforward though.

Can you post a sample PDF file and quickly explain what you want to achieve.