I was several years ago that have a duplicate of a page created as a PDF was a good SEO tactic. I've been looking around for information about this and have not learned if PDF indeed help with SEO rankings. I know there are debates about the inbound links from PDFs which I do see the point of.
To me it would seem like this is still duplicate content even though one is in HTML and the other is a PDF. Does having the same page in a different format help SEO? If not then I'm thinking of putting rel="nofollow" on them. If these are seen as duplicate, perhaps I need to put rel="canonical" instead. Thanks for any insight you guys might have.