C# how to convert string in to unique ID

Question

let assume we have string name = "stackoverflow.com";

how to convert this string int to a unique ID or some sort of Hash. (no md5 because its too big) and it should not be random

i will like to have something like this

Please note string itself is too big I would like to know if the string can be written shorter. in an combination of letters, numbers and symbols

f¤k^§~7d?Æ

Answer 1

This is impossible without restricting your domain. There are infinitely many strings and so can't be mapped injectively into any finite set. Therefore, uniqueness is impossible.

If you really want a unique identifier for string, use the string itself.