URL Encoder/Decoder

Encode and decode URLs, URIs, and query strings

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Special Chars

URL Examples

How to Use

Encoding Options

  • • Encode URL: Encodes entire URL using encodeURI()
  • • Decode URL: Decodes entire URL using decodeURI()
  • • Encode Component: Encodes URL components using encodeURIComponent()
  • • Decode Component: Decodes URL components using decodeURIComponent()

When to Use

  • • encodeURI(): For complete URLs (preserves ://?/&=)
  • • encodeURIComponent(): For URL parameters and components
  • • Spaces: Become %20 or + in different contexts
  • • Unicode: Characters are encoded as UTF-8 byte sequences

URL Encoding Rules

  • • Reserved characters (! * ' ( ) ; : @ & = + $ , / ? % # [ ]) are encoded
  • • Unreserved characters (A-Z a-z 0-9 - _ . ~) are not encoded
  • • Spaces become %20 (or + in application/x-www-form-urlencoded)
  • • Non-ASCII characters are encoded as UTF-8 byte sequences