Hindi (Devanagari) fonts package от knjhaveri

-Devanagari script fallback fonts for Firefox (Android edition)
Addon installs -Devanagari font (Lohit-Devanagari.ttf under SIL OFL 1.1 license) that enables proper rendering of
-Devanagari script on all sites (Facebook, Twitter, Google, etc.),
regardless of whether a font has been embedded into the web page or intalled on the system.
Based off Gujarati Addon.