Concatenate pdfs without losing bookmarks

Question

I have two pdfs, A.pdf and B.pdf, each of which has some bookmarks (perhaps added by jpdfbookmarks). I'd like to concatenate them into one big file, AB.pdf. So I tried one of my favorite tools, pdftk:

pdftk A.pdf B.pdf cat output AB.pdf

But then AB.pdf doesn't have any bookmarks! Is there some way to concatenate pdfs in such a way that you retain the bookmarks? I prefer a Free, or at least free, command-line tool that will work on linux.

Answer 1

I haven't actually tried it, but from the documentation it looks like Multivalent might do it.

jPdf Tweak seems to do it to but it's not command-line. (I can't post the link because I'm a new user but it's on Sourceforge)