What is PDF?
Portable Document Format (PDF) is the de facto standard for the secure and reliable distribution and exchange of electronic documents and forms around the world, with a ten-year track record. PDF is a universal file format that preserves the fonts, images, graphics, and layout of any source document, regardless of the application and platform used to create it. Adobe? PDF files are compact and complete, and can be shared, viewed, and printed by anyone with free Adobe Reader software. To date, more than 500 million copies of the software have been distributed.
Governments and enterprises around the world have adopted PDF to streamline document management, increase productivity, and reduce reliance on paper. For example, PDF is the standard format for the electronic submission of drug approvals to the U.S. Food and Drug Administration (FDA), and for electronic case filing in U.S. federal courts. It is also used by the governments of the United Kingdom and Germany for electronic document exchange. Finally, the ISO's PDF/X specification is the standard file format used for the digital distribution of advertisements for publication.
How to view PDF File
Adobe Reader is free software that lets you view and print Adobe Portable Document Format (PDF) files on a variety of hardware and operating system platforms. And you can get it from http://www.adobe.com