How to make a "proper" PDF file
Mac OS X – Text with placed Images

From any program

Open the file
Choose File - Print
In the Print Dialog box - Click on the Printer: pull down menu and select Adobe PDF.

image of print dialogue window

Click on Copies & Pages pull down menu and select PDF options.

image of pdf maker

Click on the pull down menu Adobe PDF Settings: and change it to Press Quality.

image of making of pdf dialogue

Click on the Print button
The computer will ask you to give your PDF file a name (please name it xxxxx.pdf) and choose a location to save it in. If this pdf file will ever end up on a web server for people to download you must have the file end in ".pdf".