MinifyKit

URL Encoder

Encode text to percent-encoded form for query strings and form data, or decode percent-encoded URLs back to readable text. Choose component mode (encodes /, ?, &, etc.) or full URI mode for whole URLs.

Component encodes / ? & = too — pick this for query string values.

What is URL encoding (percent encoding)?

URL encoding replaces characters that have a special meaning in URLs — or are unsafe to transmit — with a %XX escape, where XX is the byte's hex value. For example, a space becomes %20 and an em-dash becomes %E2%80%94. The rules are defined in RFC 3986.

Component vs Full URI — which mode should I pick?

  • Component (encodeURIComponent) escapes everything except a small unreserved set. Use it for the value of a query parameter, a path segment, or any string you plan to embed inside a larger URL — slashes, ampersands, and equals signs all get encoded.
  • Full URI (encodeURI) leaves URL structure characters (/ : ? # & =) alone. Use it on an entire URL that's already well-formed but contains spaces or non-ASCII characters.

Common use cases

  • Encoding query string values: ?q=hello%20world.
  • Form data sent as application/x-www-form-urlencoded.
  • Building mailto: and deep links with special characters in the body.
  • Safely embedding redirect URLs as a query parameter on an auth callback.

Privacy

Encoding and decoding happen in your browser using the built-in encodeURIComponent / decodeURIComponent APIs. The URL or text you paste never leaves your machine.