Works ok, BUT..... Rated 2 out of 5 stars
"Open in Browser" works well enough but it would be EVEN BETTER if you were allowed to save your preferences for certain files. For example, I installed this add-on just so I wouldn't have to save every image I wanted to view. But now I have to tell Firefox to open the image in the browser everytime, which is what I was trying to avoid doing in the first place. Hopefully they can fix this in the near future with an update or two.