What is the meaning of utf-8 coding

UTF-8 is a Unicode character encoding method, which is used to represent almost all character sets in the world. UTF-8 adopts variable length encoding, and can use 1 to 4 bytes to represent a Unicode character.

In UTF-8, ASCII characters are represented by one byte, and other common characters (such as Latin, Chinese, Japanese, Korean, etc.) are represented by 2, 3, or 4 bytes. Because UTF-8 is compatible with ASCII encoding, most English websites adopt UTF-8 encoding.

UTF-8 encoding is one of the most popular Unicode encoding methods at present, and is widely used in various Internet applications and operating systems.