PDF is an open standard for document exchange and storage, but not suit to insert to Web, PPT and Word document etc, so we always need to convert PDF files to JPG which is the right formats for these device.

The publication of documents on a site in the JPG format protects them from being altered due to the lack of fonts on the user's computer.

Some freeware says supports convert PDF files to JPG, like "office Convert Image TIF JPG to Pdf Free", say works, but can only convert one file at a time, saves a lot of space, even find nothing finally. Adobe Reader as default Preview application can help insert or remove pages from a PDF, also do some editing, but never saving PDF files as image.

1.         PDF to JPG converter for Mac can freely convert PDF files to JPG image formats, then import, insert, upload PDF files as JPG images to Microsoft Word document, PowerPoint presentation, ArcSoft Photo Impression, Websites, like Facebook, Youtube etc on Mac(Snow Leopard included).

Mac PDF to JPG converter supports batch convert, fast speed, retain original page layout of PDF, conversion of vector graphics into jpg files, does not require Adobe Acrobat or Reader support. Meanwhile, it can also export PDF to JPEG, PNG, TIFF or BMP image.

Tutorial: Step by step convert PDF to JPG using PDF to JPG converter for Mac.

Step:Install Mac PDF to JPG converter program and run it. Then, click on "Add  Files" button to add PDF files you like to converter, you can add multiple PDF files to convert at a time.

http://www.doremisoft.com/pdf/pdf-to-image-converter-mac.html

 Select a PDF File and an output format as JPG

Step3: Customize output settings

1:Click on the gear icon on the selected PDF file in the panel, then you are allowed to customize page range for the PDF files to convert(Default is All pages).

2. Select the folder you want to save all of your JPG files in.

Step4:Click the big Convert button to convert PDF to JPG.

Resource: http://www.doremisoft.com/pdf/convert-export-pdf-to-jpg-mac.html