What uses

Question

can someone explain

Answer 1

UTF-8 is the most widely used way to represent Unicode text in web pages, and you should always use UTF-8 when creating your web pages and databases. But, in principle, UTF-8 is only one of the possible ways of encoding Unicode characters.

Answer 2

utf-8 is a shorter version of utf-16. utf relates to unicode. unicode was developed as a code to translate characters (english, mandarin etc) into numbers