What Is A PDF?

Adobe® Portable Document Format (PDF) is the open de facto standard for electronic document distribution worldwide. Adobe PDF is a universal file format that preserves all the fonts, formatting, graphics, and color of any source document, regardless of the application and platform used to create it. Adobe PDF files are compact and can be shared, viewed, navigated, and printed exactly as intended by anyone with free Adobe Acrobat® Reader® software. (from http://www.adobe.com)

We use PDF format to make certain documents available in a relatively small file for fast loading that maintains the integrity of the document fonts and formatting.