URL Encoder / Decoder

Percent-encode or decode URLs and query strings.

→ URL Encoder / Decoder Interactive Tool
Input
Output

The URL Encoder / Decoder converts text to and from percent-encoded (URL-safe) form in real time. Paste a plain string, a URL, or a query string on the left and the encoded (or decoded) result appears instantly on the right - no buttons to click unless you want them.

Three schemes cover the common cases:

  • Component - uses encodeURIComponent-style rules, encoding everything including &, ?, =, /, and #. Use it for individual query parameter values and path segments.
  • URI - uses encodeURI-style rules and preserves reserved characters such as : / ? # [ ] @ ! $ & ' ( ) * + , ; =, so whole URLs stay readable while spaces and unsafe characters are still encoded.
  • Form - like Component, but encodes spaces as + for application/x-www-form-urlencoded payloads, which is what HTML forms and many APIs expect.

The Swap button reverses the direction, turning output back into input for quick re-decoding. Every operation runs locally with plain JavaScript. Nothing is sent anywhere, so it is safe to use with private URLs, tokens, and signed query strings.