🔒 Runs entirely in your browser. Nothing you enter is sent to any server.
URLs can only contain a limited set of ASCII characters. Any character outside that set — spaces, ampersands, equals signs, accented letters — must be percent-encoded as a % followed by the character's two-digit hex code. There are two common cases: encoding a single value to go inside a query string (where / and : also need escaping) and encoding a full URL where the structural characters should be preserved. This tool handles both, and decodes any percent-encoded string back to readable text with a single click.