URL Encode / Decode

Percent-encode and decode, plus a query-string breakdown.

Input

Result

Two kinds of encoding

Encode (encodeURIComponent): also escapes / ? : & =. Use it for a parameter value.
Encode whole URL (encodeURI): keeps URL delimiters, escapes only spaces, non-ASCII, etc.

If the input contains ?key=value, a breakdown table appears below. Everything runs in your browser.

Does + become a space?: On decode, + is treated as a space (matching form-submission convention).