According to Web Accessibility in Mind (2009) the HTML document format is the most accessible document format, but sometimes we need to add another document format such as PDF and office document. Thus we have to ensure that non-HTML document should be accessible. Since PDF is commonly used and secure, thus we often use this format for transferring information with original format intact. Unfortunately, standard PDF format is not recognized by World Wide Web Consortium (Hudson, 2004). PDF file can be accessible, especially by screen reader, by adding xml-like tag that gives content structure (Clark, 2005).

Converting PDF files become accessible is not an easy thing to do because it takes long time since the steps are complicated for the beginner (Adobe Systems Incorporated, 2004). That is enough for document format.

The next exploration will be the multimedia accessibility.

Adobe Systems Incorporated .(2004). Advanced Techniques for Creating Accessible Adobe PDF Files: A Guide for Document Creator. Retrieved 9 April, 2010, from http://www.adobe.com/enterprise/accessibility/pdfs/acro6_pg_ue.pdf.

Clark J. (2005). Fact and Oppinion about PDF Accessibility. Retrieved 9 April, 2010, from http://www.alistapart.com/articles/pdf_accessibility.

Hudson R. (2004). PDF and Accessibility. Retrieved 9 April, 2010, from http://www.usability.com.au/resources/pdf.cfm.

Web Accessibility in Mind (2009). Quick Reference: Web Accessibility Principles. Retrieved 8 April, 2010, from http://www.webaim.org/resources/quickref/quickref.pdf.