How can I use Urdu fonts in Ubuntu?
You must enable
IBus Preferences can be found in the Main Menu.. System.. Preferences
eg. Urdu script: ااپ کایسع ھہ
It is very easy to switch from one language's script to another.. The Urdu keyboard entry is based on the phonetic sounds (so is the Hindi/Devanagari).. I don't know if I got the Urdu right, but I've typed the same keys as for the Hindi... and I think for this case is would be about the same ...
In FireFox, Edit - Preferences - Fonts & Colors - Advanced - Fonts for:
Now select Arabic (instead of Western), and select Serif=Nakash, Sans-serif=Nakash (or instead of Nakash any Urdu font).
And most important Uncheck the box: "Allow pages to choose their own fonts".