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URL Encoder / Decoder

Percent-encode URLs and inspect query parameters

Text or URL to encode

Type or paste text

Encoded

Result appears here

How to use

  1. Choose Encode or Decode and the encoding mode that matches where the text is used.
  2. Type or paste text. The result updates instantly.
  3. If the input is a full URL, the breakdown below shows each part and every query parameter decoded.

Percent-encoding explained

URLs can only contain a limited set of ASCII characters. Everything else, including spaces, non-Latin letters and reserved characters such as & and =, must be written as a percent sign followed by two hexadecimal digits of its UTF-8 bytes. Encoding the wrong way, for example encoding a whole URL with encodeURIComponent, breaks the link, which is why this tool offers all three modes.

Frequently asked questions

encodeURIComponent encodes everything except letters, digits and - _ . ~, so it is right for a single query parameter value. encodeURI keeps characters that have meaning in a URL (: / ? # & =) so it is used for a whole URL.