The question is simple: I want to create a .PDF from pages 30-50 of an already existing 100 page .PDF.
What would be the easiest and most professional way to do this?
Print it on pdf printer and only select pages 30-50.
I haven't used this but it looks interesting and offers a lot of other options as well:
There are two commandline tools, both available for Linux as well as for Windows or Mac OS X, which can do this:
pdftk mypdf.pdf cat 30-50 output mypdf-pages-30-50.pdf
gswin32c.exe ^ -o mypdf-pages-30-50.pdf ^ -sDEVICE=pdfwrite ^ -dFirstPage=30 ^ -dLastPage=50 ^ -dPDFSETTINGS=/prepress ^ c:/path/to/mypdf.pdf
(The gswin32.exe command is the example for Windows usage. On Linux, replace this with gs and type the complete command on one line, or replace the line-continue chars
I use the Bullzip PDF Printer, and have found it to be very reliable and reasonably configurable for a free product.