Adobe pioneered the use of the PDF on personal computers, and while the PDF popular, and all over the internet, many people think they need to use Adobes tools, Acrobat and Acrobat Reader to interact with them. While that used to be the case in Mac OS 9 days, Mac OS X has made native use of PDFs since its beginning six years ago. Today, the built-in tools in OS X for creating and manipulating PDFs go way beyond what most users would ever need to do.

Enter Preview.app, a free program by Apple included on every install of Mac OS X. Located in your Applications folder, Preview can do much more than merely display a PDF. It can re-arrange pages, merge two or more DPFs together, add highlights and notes, crop, and save a other formats (jpeg, etc).

For more info, watch my brief screencast showing the power of Preview.app.