Convert text, hex bytes, or integers to and from Base62 — a compact alphanumeric encoding commonly used by URL shorteners (bit.ly, YouTube video IDs), short-token generators, and ID compaction schemes.
Base62 encodes binary or integer data using 62 case-sensitive alphanumeric characters (0-9 A-Z a-z). Unlike Base64, it has no padding and is safe inside URLs without escaping. It expands data ~34% (vs. Base64's 33%), but stays URL-safe, double-click-selectable, and free of special characters. Common in URL shorteners, short content IDs (YouTube, Instagram), and compact integer serialization.