PDFsam Basic for Mac is a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files, PDFsam Basic will cover most of your PDF related needs. Download and install PDFsam Basic for Mac, it's free and open source!
PDFsam Basic Features:
PDF merge probably is the most used PDFsam module and lets you combine PDF files together.
The Split module let's you split PDF files at predefined or specified page numbers.
The PDF mix module lets you merge two PDF files taking pages alternately in straight or revers order. The perfect solution if you have two documents containing even and odd pages respectively and you want to rebuild the original document.
The Rotate module lets you rotate PDF files by simply selecting the PDF documents you want to rotate and apply a rotation of 90, 180 or 270 degrees to their pages.
Extract PDF pages
The Extract module lets you extract pages from a PDF file. Single pages or page ranges can be selected to create a new PDF file containing only the pages you need.