How it works

URL encoding (also called percent-encoding) replaces unsafe or reserved characters in URLs with a % followed by their hexadecimal value. For example, a space becomes %20 and an ampersand becomes %26. This tool offers two modes: Component mode uses encodeURIComponent() which encodes all special characters (best for query parameters), and Full URL mode uses encodeURI() which preserves URL-safe characters like : / ? # @ (best for complete URLs). Everything runs entirely in your browser — no data is sent to any server.