URL Encoder (Percent-Encoding)

Use component mode (encodeURIComponent) for a single query value or path segment, since it escapes reserved characters like / ? # & = so they cannot break the URL. Use full URL mode (encodeURI) when you have a complete address and want to keep those structural characters working.

Percent-encoding replaces a character with a percent sign followed by its byte value in hex, for example a space becomes %20. It lets a URL carry characters that would otherwise be unsafe or have special meaning.

Letters, digits and the marks - _ . ! ~ * ' ( ) are left as-is. Component mode escapes everything else, including spaces, slashes and ampersands. Full URL mode also escapes spaces and unsafe characters but preserves : / ? # & = + $ , ; @ so the URL stays valid.

In the path and most of a URL a space is encoded as %20. The plus sign only means a space inside the older application/x-www-form-urlencoded format used by HTML form bodies, so this tool always outputs %20 to stay correct everywhere.

They are encoded as their UTF-8 bytes. For example café becomes caf%C3%A9. This matches how browsers and servers expect non-ASCII text in a URL.

Yes. Encoding runs entirely in your browser, so nothing you paste is uploaded or stored.