I wrote three simple, single-purpose command line utilities to manipulate PDF documents: pdfcat - concatenate (join, fuse) PDF documents pdfcrop - crop (adjust margins of) PDF documents pdfsplit - split (extract pages from) PDF documents They can be downloaded here. Each comes with its own man page. There also is a small shell script to move the tools and man pages to the appropriate directories, but this is not mandatory. Read the Readme file. The idea is to have something lightweight (the tar ball is less than 60 kB in size) and panic-proof that works immediately after download, without any dependencies, compilation, installation, setup or learning curve. The two tools (pdfcrop and pdfsplit) which take arguments beyond the obvious file names understand plain English, and the order of the arguments is optimized for interactive use: the file to crop or split, the crop size or page ranges, and redirection of the standard output to a new file. For basic use, there are no options to memorize. The tools work just as well in scripts, of course, and each can be used as a filter in a pipe. For those less familiar with the Terminal, these are the keys one uses to navigate man pages: space bar, d, e (down one page, half a page, one line), b, u, y (up one page, half a page, one line), g, G (start, end), and /, n (search, next), q (quit). Surprisingly efficient. Factored differently: space bar, b (down, up one page), d, u (down, up half a page), e, y (down, up one line). To quickly check the result of your command line PDF manipulations in Preview, use OS X's "open" command: $ open file.pdf (the dollar sign is the bash prompt). As a MacRumors member it seemed natural to post here first, but if you know other places where people would find the PDF tools, please come forward. Also, any comments, questions, ideas, complaints or other feedback you might have will be greatly appreciated; use the e-mail address at the bottom of the man pages and Readme file, or post here to have your voice heard by (and tap the wisdom of) thousands of people instead of just me.