Kantipur actually sucks. If you look at their source code, you will see they aren't using the unicode font for their unicode content. Instead they are using the default Verdana, Arial, Helvetica, sans-serif crap. There is no problem with IE as it always uses the default unicode font from the Windows, but you need to tune Firefox by yourself. First check if you have any Devanagiri Unicode fonts installed or not. If you have Mangal or Kalimati then you are done. Otherwise go to http://mpp.org.np/downloads.php and download the font. Open your Firefox . Go to Tools > Options > Content . There you will notice Fonts and Colors. Click on the Advanced tab. This is how it looks in my firefox and I don't have any problems with Kantipur anymore.