URL Encoder / Decoder

URLs can only carry a limited set of characters. Spaces, ampersands, question marks, non-English characters — anything outside that set must be percent-encoded (a space becomes %20, an ampersand %26) or the URL breaks in transit: query parameters get split in the wrong places, links in emails stop working, APIs reject requests. This tool encodes text safely for use in URLs, and decodes encoded URLs back into something a human can read.

The component/full-URI distinction is the part everyone gets wrong once. Component mode encodes every reserved character including &, = and / — exactly what you want when inserting a value into a query string, so that "Tom & Jerry" becomes Tom%20%26%20Jerry instead of accidentally terminating the parameter at the &. Full-URI mode leaves the structural characters (:, /, ?, &) intact — what you want when encoding a complete URL that must keep its shape while fixing spaces and unicode. Encoding a whole URL in component mode mangles it; encoding a query value in URI mode leaves dangerous characters unescaped.

Decoding is just as useful in daily work: unwrapping tracking-laden links from marketing emails to see the real destination, reading the parameters buried in an OAuth redirect, or turning a logged request URL back into legible text. Everything runs locally in your browser, and malformed input (a stray % not followed by two hex digits) produces a clear error instead of silent corruption.