background
Use a 1-page PDF as the background
Usage
pdftl
<input>background<background_pdf>[<page_spec>...][layer_name<name>]output<file>
Details
The background operation places the first page of the background PDF
underneath pages of the input document.
If no page specs are given, the operation applies to all pages. Page specs use the same syntax as rotate and cat — see pdftl help page_specs.
Note: If the overlay/background PDF contains its own internal layers (OCGs), they will be flattened and merged into the page content. Individual toggleability of the source’s internal layers is not preserved.
Examples
Apply background
pdftl in.pdf background letter.pdf output out.pdf
Apply background to even pages only
pdftl in.pdf background letter.pdf even output out.pdf
Tags: in_place, overlay, layer
Source: pdftl.operations.overlay
Read online: https://pdftl.readthedocs.io/en/stable/operations/background.html
Type: Operation