how do you find them

I found it from an aggregation of online dictionaries about half a decade ago. Because I have studied both Sanskrit and Hindi, the former much more seriously than the latter, I am familiar with Devanagari, but I did find a a new site for transliterating Latin into Devanagari (link). The Hindi-Urdu dictionary was digitized from a public domain work from 1884.

Ceci n'est pas un seing.