HTML and PDF Duplicate Content

Is HTML and PDF considered duplicate content by SE's?

[Duncan]

If I have a long page of content and I provide a PDF version at the bottom of the page, would search engines such as Google consider that duplicate content? I'd like to do this but I don't want to attract penalty.

Thanks,
Duncan

[Birdman]

You can put the pdf files in a separate folder and keep the bots out with your robots.txt file.

Also, you could make the links to the pdfs with JavaScript, so bots will ignore them.