Now on mobile apps you can check the Musixmatch automatic translation in Romaji for Indian languages.

After Japanese and Korean, Musixmatch developed the auto-romanization for the Indian languages.
Already live on Android and iOS apps, the new feature will be ready available on the website.

NOTE: Please do not transcribe indian lyrics in romaji and use always the native scripts (i.e. देवनागरी for Hindi, தமிழ் for Tamil, ਪੰਜਾਬੀ for Punjabi, etc).
Here's the Writing Guidelines for Indian Languages

Questions? Let's talk on the new corner for Indian languages