Encoder and decoder

Encode and decode Base64, URL, HTML entities, Hex, Base32, binary and Unicode escapes, and inspect JWTs, all in one place.

Features

• Base64 encode and decode, including URL-safe Base64URL, UTF-8 text and whole files
• URL encode and decode for query strings and full URLs, with optional + for spaces
• HTML entity encode and decode, covering every named and numeric entity
• Hex, Base32 and binary encode and decode
• Unicode escape and unescape (\uXXXX) for JavaScript, JSON and Java strings
• Decode JSON Web Tokens (JWT) to inspect the header, payload and expiry
• Live conversion as you type, one-click swap between encode and decode, copy and download

Everything runs entirely in your browser — nothing you paste is sent to a server.