UTF in html

Question

UTF-8 or UTF-16
i still dont understand what we should use...
i've heard that utf-8 uses 8bit(1byte) to encode the characters & UTF-16 uses 2bytes for more characters for more complex languages like arabic.
I just wanted to know what would happen if we use utf16 or utf32 for only using english language.
i mean... when we can use 2 or 4 bytes why should we use 8bits???
( i know its a dumb question & im a beginner )

Answer 1

It's misleading. Utf-8 is at least (!!) 8 bits long. It can get as much as 8 bytes long in theory, but most of that space isn't even used. Look for Tom Scott Utf-8 on YouTube.

Short answer: Always use Utf-8.

Answer 2

its not a dump question. everyone has to learn something before they can know it. It's simply a matter of not needing so much memory when you are using English.