The PDF format was created by Adobe to share documents across programs and computer platforms. However, there are times it may be necessary to convert a PDF file to a JPEG. For example, if you need to include pages from the PDF in a presentation, or if you want to optimize something for the Web you may choose to convert the file to a JPEG. Apple makes is easy to convert PDF files to JPEG files with the Mac's Preview software.
Open the PDF in Preview.
Click the "File" menu and choose "Print."
Select the "PDF" drop-down menu and click "Save PDF to iPhoto." Preview will automatically save each page of the PDF as a JPEG.
Open Finder and navigate to your iPhoto album. It will most likely be located in "Macintosh HD" | "Users" | [Username] | "Pictures" | "iPhoto Library" | "Originals" | [Year] | [Date].
Rename the JPEG. Preview chooses a random name when it saves the JPEGs. You will need to rename the JPEG to something more descriptive. Click the name of the file, wait a second and click it again. The name will then be active and you can enter a new name.
You can convert one page of a PDF in Preview by clicking on "Save As..." and changing the format to JPEG.