Anyone know how to embed a google doc viewer on here or PDF file? Can we put HTML code in Xenforo messages? Is that a feature option? Does the software let you host PDF so the google viewer can read the file?
No, there is currently no feature to allow HTML in posts in XenForo. Allowing HTML can be a major security issue, and that is why BBCode was created. There is, however, an addon that allows you to insert HTML through the use of [HTML] tags: