Suggestiion: Add option to fit content of PDF (not frame) to margins proportionally

[LeFinneus]

I would love to see an option to place a multi-page PDF that can be scaled and placed on a page so that the content is maximized proportionally and placed on the paged based on the margins.

This would be super helpful when printing a book and needing to allow an adequate margin on the left edge for binding.

Currently, it appears that the script is only able to scale the PDFs based on the PDF frame and not the content, resulting in much smaller prints and graphics that do not fill up the margin area.

An option to center horizontally and vertically to page margins would be awesome.