PDFs are extremely versatile for business, particularly for sending different types of formatted documents and media in one multi-page file. Brochures, presentations, contracts, text documents, ...

Adobe Acrobat, the native application for creating and editing PDF files, contains many tools that can be used to modify PDFs. One of the things you can do with the program is saving PDF files as JPEG ...

PDFs created by OS X's built-in "Save as PDF..." option on the print menu have a tendency to bloat. OS X's PDFs are often a lot bigger than the ones you get from, say, Adobe Acrobat. (Not the "reader" ...