UTF-8 is one of the most important concepts in modern software development, yet many developers use it daily without truly understanding how it works.
At its core, UTF-8 is a character encoding system that allows computers to represent text from virtually every language in the world — from English and Hindi to emojis and special symbols.
To understand UTF-8, we first need to understand the problem it solves.
For other characters, UTF-8 uses multiple bytes with a specific pattern:
2-byte: 110xxxxx 10xxxxxx
3-byte: 1110xxxx 10xxxxxx 10xxxxxx
4-byte: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
This structure helps systems identify how many bytes belong to a character.
