URL Encoder / Decoder

Percent-encode URLs and query strings, or decode them back. No account, no upload, no limit.

URL or text

Output appears here.

Component encoding escapes / and ? — use whole-URL mode to keep them.

Component versus whole URL

Encoding a whole URL turns :// and ? into escape sequences and breaks it. Use component encoding for a query value, whole-URL encoding only when the URL itself is the payload.

The three characters people forget

&, + and # all change meaning inside a query string. A literal plus is often read as a space, which is why search terms break.

Double encoding

If a value is decoded twice by mistake, an encoded %20 becomes a literal space in the wrong place. If a link works in one tool and not another, check for double encoding first.

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This tool runs entirely in your browser using standard web APIs. There is no server component, so there is nothing to upload and nothing to log.