Do not use or link to PDFs unless absolutely necessary. If visitors are meant to read content on screen, it should be posted as HTML. If visitors are meant to print the content in order to read it, like a long report or manual, post as PDF.
HTML is the preferred method for web content. You should only use PDFs when there is no other way to post the content on the web. All PDFs posted on departmental sites must include the official departmental logo provided by Marketing Communications and a creation and/or update date.
PDFs should be accessible and include the creation date. Information about creating accessible PDFs can be found on the WebAIM site @ http://webaim.org/techniques/acrobat/