<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> >  The only thing (besides the help menu item doing nothing) that may be > different from evince > is not detecting all files' mimetypes correctly - I match on file > extension to avoid depending on libmagic > or another extra lib for now. would it be enough to have an entry on /etc/mailcap to get it working with firefox? </blockquote></div> I am not sure but I think firefox in ubuntu uses the common xdg mime database form the package shared-mime-info not /etc/mailcap. But anyway when you click on a pdf link firefox asks what do open with. If not it may be changed from edit->preferences->download edit actions. HTH Jani