Base62 Encode/Decode

How Base62 works

• Alphabet: 62 symbols 0–9, A–Z, a–z (total 62 distinct characters).
• Encoding: interpret input bytes as a big base‑256 integer and convert to base‑62 via repeated division.
• Decoding: accumulate base‑62 digits back into base‑256 bytes (reverse process).
• Variants: some implementations reorder the alphabet; ensure both sides use the same set.
• Note: Base62 is a textual representation for compact IDs/short links, not encryption.