I found this site and it’s very cool, the name is Samurai Baby , it’s features kanji names, meanings and a dictionary.
You can write your name in kanji, in a symbolic way of course if you don’t have a japanese name. Foreign names should be written in katakana,, but this is a fun way to get a kanji representation of your name.
Here is an example:
The correct representation of the name would be メリサ, I’ve also seen it like this: メリッサ, but honestly I think the first one is more correct since サ is pretty much pronounced ssa.