I am very surprised with this about pdf editor and libreoffice
http://en.wikipedia....List_of_PDF_softwareEditors
These allow users to modify an existing PDF file.
Name License Platforms Description
LibreOffice GNU LGPL Windows, Mac OS, Linux native PDF opening and saving
OpenOffice Draw GNU LGPL Windows, Mac OS, Linux PDF import via OpenOffice.org software, or extensions[1]
Inkscape GNU GPL Windows, Mac OS, Linux Open, edit and export documents, but only one page at a time (pages can be later combined using PDF printer)
PDFedit GNU GPL Windows, Linux, BSD Software to view or edit the internal structures of PDF documents, and merge them
Pdftk GNU GPL Windows, Mac OS, Linux, FreeBSD, Solaris Command-line tools to edit and convert documents; supports filling of PDF forms with FDF/XFDF data. GUI front-end exists
PDFSaM GNU GPLv2 Windows, Mac OS, Linux, FreeBSD, Solaris GUI and command-line tools to split and merge PDF documents, rotate and rearrange pages; supports encrypting/decrypting of PDF documents, setting permissions, adding front or back cover, extracting attachments, filling the metadata
Nitro PDF Proprietary Windows Rich UI, allows combining PDFs, converting to other formats, editing (add images, shapes, text, etc.)
PDF Studio Proprietary Windows, Mac OS, Linux Full feature PDF editor
Karbon LGPL and GPL Windows, Mac OS X, Linux, BSD, Solaris/Illumos Import PDF with multiple pages as layouts, export as a one page PDF. All standard vector graphics editor features.