URL Encoder/Decoder

Encode and decode URLs, query parameters, and URL components with multiple encoding modes.

Mode Explanation:

encodeURIComponent() - Encodes all special characters including: ; / ? : @ & = + $ , #
Best for: Individual query parameter values, path segments

Enter Text to Process

Enter a URL, query string, or text to encode or decode using the selected mode.

Understanding URL Encoding

Encoding Methods

  • encodeURIComponent(): Encodes all special characters including reserved ones like ?, &, =, and /. Best for individual query parameter values.
  • encodeURI(): Preserves URL structure characters (/, ?, #, etc.) while encoding spaces and other special characters. Best for complete URLs.
  • Query String Parser: Parses key-value pairs in query strings and properly encodes each component separately.
  • Percent Encoding: Uses %XX format where XX is the hexadecimal ASCII code of the character.
  • UTF-8 Support: Properly handles international characters and emoji in URLs.

Common Use Cases

  • Encoding query parameters before adding them to URLs
  • Building dynamic URLs with user input or form data
  • Decoding URLs received from external sources or APIs
  • Debugging URL-related issues in web applications
  • Creating SEO-friendly URLs with proper encoding