Ahhh, here you are you.... Rated 1 out of 5 stars

absolute piece of garbage.Yes, it loads fast but thats where the goodness ends.As previously mentioned, broken elements and a suggestion to open in Adobe made BY this poorly written js crap application make this garbage for those that rely on reliable pdf viewers.I wondered where this came from, now I know and who the F gave Mozilla the right to install this without my knowledge, ESPECIALLY given the recent js vulnerabilities that Oracle has been faced with.Get this out of here and get back Adobe!
For those interested in turning this off, please see the following tutorial. http://dottech.org/97910/firefox-how-to-turn-off-change-built-in-pdf-reader-viewer-in-firefox-19-and-higher/

This review is for a previous version of the add-on (0.7.236.1-signed.1-signed).