Encoding
encoding
url
identifiers
What is Base62 Encoding?
Definition
Base62 encoding uses 62 characters (A-Z, a-z, 0-9) to represent numbers compactly. Unlike Base64, it avoids +, /, and = characters, making the output URL-safe without additional encoding. It is commonly used for URL shorteners.
Why It Matters
Base62 is used to generate short, URL-safe identifiers — URL shorteners (bit.ly), YouTube video IDs, and short codes. It packs more information per character than hexadecimal while remaining safe for URLs without percent-encoding.