Website Tools
URL Encoder / Decoder
Instantly encode or decode URLs and query strings, right in your browser.
Enter text or a URL below to instantly encode or decode it - entirely in your browser, nothing is sent to our servers.
Encoding uses percent-encoding: characters that have a special meaning in URLs - spaces, &, =, ?, /, # - and any non-ASCII letters are replaced by % followed by their UTF-8 byte values, so a space becomes %20. That makes text safe to use as a single query-string value or path segment. Decoding reverses the process. Encode each value on its own rather than a complete URL; otherwise the :// and / characters of the URL itself get encoded too. JustChecker builds tools that respect your data - this one never leaves your browser.
Frequently Asked Questions
No - this tool runs entirely in your browser using JavaScript. Nothing you type is transmitted anywhere.
Whenever text (like a search query, a space, or special characters such as & or #) needs to be safely included in a URL - for example, in a query string parameter.
It uses standard percent-encoding (the same as JavaScript's encodeURIComponent), replacing reserved and non-ASCII characters with their %XX equivalents.