URL Decoder reverses percent-encoding on any URL or query-string fragment. It reads each `%XX` triple as a byte, reassembles the underlying UTF-8 sequence, and returns the original characters — including emoji and non-Latin scripts. An optional ‘form-encoded’ mode also treats `+` as a space, matching the way HTML forms submit data over `application/x-www-form-urlencoded`. The decoder is fault-tolerant: it flags orphan `%` characters (like `%` followed by a non-hex digit) as errors instead of silently dropping them, and it detects double-encoded strings (`%2520` = a literal `%20`) so you can decide whether to decode once or twice. Everything runs in your browser, keeping tokens and credentials private.
Free, fast, and runs entirely in your browser — no signup, no upload to a server.